







The mass of a length of tree trunk 
20171113 

SM pose la question : What is the mass of a length of 1m of trunk a tree trunk of uniform cross section of area 0.5 sq.m is made of wood of relative density 0.8? Penny Nom lui répond. 





Filling a hole with 14 tons of rock 
20160408 

Barry pose la question : If I had 14 tons of inch and one half sized aggregate rock, how large of a square or rectangular shaped hole would I need to hold that amount? Penny Nom lui répond. 





The weight of a steel block 
20150404 

Mark pose la question : the weight of a steel cube 37 inches X 28 inches X 7 inches Penny Nom lui répond. 





The density of sea sand 
20141102 

Lenny pose la question : Hi There,
I need to find out the the density of sea sand to convert one metric ton to cubic
meter as I am submitting for a tender which is in cubic meter but the requirement
is in metric ton. I searched through the web site but no density of sea sand is given
though there is specific Gravity of dry sand is available. I was given a density of
1.6 to work with. If that is true am I right to say that 1 cubic meter of sea sand is
equivalent to 1.6 metric ton? Please help as I am getting confused with what I am
able to find out on the web.
Thanks much in advance
Rgds
Lenny Penny Nom lui répond. 





A small solid silver pyramid 
20140613 

Jenesis pose la question : For Awards Night at Baddeck High School, the math club is designing small solid silver pyramids.The base of the pyramids will be a 2 in by 2 in square. The pyramids should not weigh more than 2.5 pounds. One cubic foot of silver weighs 655 pounds. What is the maximum height of the pyramids? Penny Nom lui répond. 





The weight of salt in a basket 
20140517 

Sumit pose la question : I want to determine how many kg of salt or XYZ thing can be filled in a basket
Length = 4.5"
Breadth = 5"
Height = 6"
Even its formulae
is kg quantity can be different for semi solid thing Penny Nom lui répond. 





A slab of wet clay 
20140412 

Karen pose la question : How many square feet ( at 1/4 inch thickness) are in 100 lbs. of wet clay? Penny Nom lui répond. 





A silver figurine 
20130503 

Renee pose la question : I have a silver figurine, the density of silver is 10.5g/cm3. if the figurine weighed 149 g. to determine the volume, he dropped it into a cylindrical glas of water. the diameter of the glass is 6 cm and the figurine was pure silver, by how much should the water level in the glass rise? Penny Nom lui répond. 





The weight of a pipe full of water 
20130116 

joe pose la question : how do you figure out the weight of a pipe full of water Harley Weston lui répond. 





A uniform probability density function 
20120326 

Noeline pose la question : The label on a bottle of liquid detergent shows contents to be 12 ounces per bottle. The production operation fills the bottle uniformly according to the following probability density function:
f(x) = 8 for 11.975 ≤ x ≤12.10
and
f(x) = 0 elsewhere
a. What is the probability that a bottle will be filled with 12.02 or more ounces?
b. What is the probability that a bottle will be filled between 12 and 12.05 ounces?
c. Quality control accepts production that is within .002 ounces of number of ounces shown on the container label. What is the probability that a bottle of this liquid detergent will fail to meet the quality control standard? Penny Nom lui répond. 





One acre of dirt 6 inches deep 
20120111 

Cameron pose la question : Ok what im wanting to know is how many pounds of dirt are in 80
acres of land that is 6 inches deep? My friend and I are stumped on this question Penny Nom lui répond. 





The weight of 36 inch steel pipe 
20111222 

Keith pose la question : What is the weight of 36 inch steel pipe 3/4 wall per foot in lbs. Penny Nom lui répond. 





The mass of a metal box 
20110311 

Pamela pose la question : A metal block has the dimensions of 3.16 inches wide, 2.15 inches
high, 4.98 inches long. What is the volume of the block in cm^3?
What is the block's mass if the metal has a density of 5.89g/cm^3. Robert Dawson lui répond. 





The weight of a tank 
20110111 

tom pose la question : A tank, open at the top is made up of thin sheet iron 1in. thick. The internal
dimensions of the tank are 4 ft. 8in. in long ;3 ft. 6 in.in wide ;4ft 4 in. in deep
Find the weight of the tank when empty, and find the weight when full of salt
water. (Salt water weighs 64 lbs. per cu. ft., and iron is 7.2 times as heavy as
salt water) Harley Weston lui répond. 





How many gallons of water will it take to fill a classroom? 
20101201 

deena pose la question : How many gallons of water will it take to fill a classroom that is 26 feet long by 19 feet wide and 9 feet high? How many tons of water will that be? Stephen La Rocque lui répond. 





The weight of some dirt 
20101103 

Maggie pose la question : I am wanting to know how many tons of dirt we r going to need to fill a basement.
The measurements we r going with r 15ftx15ftx8ft. Penny Nom lui répond. 





Disposing of some concrete 
20100812 

Kathy pose la question : We are needing to dispose of concrete that we are tearing out of our
backyard and I need to figure the dimensions and weight.
I figured we have approx. 419 sq ft of concrete at 4" thick.
Could you tell me the how much that comes to in cubic ft,
cubic yards and weight. So I can get some estimates on pricing to
haul off and dispose of. thank you Harley Weston and Tyler Wood lui répond. 





70 cubic meters of mulch 
20100730 

zsuzsi pose la question : i have 70 cubic meters of mulch to move and an 8 tonne truck to use
how much tonnage is to 1 square meter so that i can work out how many trips i need to make Penny Nom lui répond. 





The tonnage of some gravel 
20100722 

Gregory pose la question : i have a road that is 8 miles long 20 feet wide and 4 inches deep what is the tonnage for gravel i would need Penny Nom lui répond. 





Finding Density Given Volumetric Thermal Expansion Coefficient 
20091226 

florence pose la question : Hi
Please help me to apply the formula for this problem. The coefficient of volumetric for gold is 4.20 X 10^5 C degrees. The density of gold is 19,300 kg/m^3 at 0.9 C degrees. What is the density of gold at 1050 degrees C.
Could you please explain how to get the solution of 18,500 kg/m^3
Thank you for your help
Florence Janice Cotcher lui répond. 





Density of dirt and gravel 
20091026 

ken pose la question : if digging a load of dirt and gravel in mining how many yards of material to the ton thanks Penny Nom lui répond. 





Sawdust 
20090929 

joel pose la question : What is the density of saw dust Harley Weston lui répond. 





Gravel in an aquarium 
20090809 

Bev pose la question : Hi...I worked this part out, but want to know how many kilograms of gravel I will need...thanks
Bev
Cylinder shape.
A cylindrical shape that has a radius of 82 centimeters and a depth of 7 centimeters has a volume of:
Volume
= 0.14787 cubic meters
= 147870 cubic centimeters
= 0.1934 cubic yards
= 5.2219 cubic feet
= 9023.5 cubic inches
= 39.063 U.S. gallons
= 147.87 liters
* calculations accurate to 5 decimal places of precision Harley Weston lui répond. 





Cubic meters of gravel in a 7 ton lorry 
20090621 

Jackie pose la question : I have to transport gravel in a 7 ton lorry and I know how many cubic meters of gravel I need, but I need to know how many cubic meters of gravel a 7 ton lorry can hold.
Thanks, Jackie Penny Nom lui répond. 





The amount of material remaining on a reel 
20090304 

James pose la question : Question from james:
I am after a standard calculation so that after each usage of the Reel I can get the Remaining Quantity in kilos left on the roll
below is an example of roll
THICKNESS: 30 MICRON
REEL WIDTH: 7.5 CM
REEL DIAMETER: 76 CM
REEL WEIGHT: 7.13 KILOS
The core centre has a 9cm diameter, the weight of the roll is excluding the core , and after each use the diameter of the role is measured.
I am a factory supervisor working on project and need this calculation info for template.. Thanks James Harley Weston lui répond. 





Pressure at Given Depth 
20090222 

Tamara pose la question : A sea is 3km deep. The average density of sea water there is 1020 kg/m^3. What is the water pressure at the bottom? Janice Cotcher lui répond. 





The volume of a yogurt pot 
20081204 

Robyn pose la question : Okay, I know you have some answers on converting this already, but I can not convert the yoghurt pot I need yet into ml.
Is there some way to explain this using the yoghurt as an example?
The pot's 150g of lowfat strawberry yoghurt... would the 'lowfat' have an effect on this?
I'm sorry if this is a bother for you to answer, I just don't seem to be able to get it...
Have a nice day.
 Robyn Janice Cotcher and Penny Nom lui répond. 





The weight of a concrete cylinder 
20080918 

Curtis pose la question : I am trying to calculate the weight of a concrete cylinder. The diameter is 56" and the thickness or depth is 24". Can anyone help me? If possible I would like to see the formula as to how the answer was derived. Thank you Harley Weston lui répond. 





557 mL of benzaldehyde 
20080828 

Kara pose la question : Calculate the mass of 557 mL of benzaldehyde. The density of benzaldehyde is 1.04 g/mL. Penny Nom lui répond. 





The weight of concrete 
20080611 

Daniel pose la question : I need to calculate the weight of Concrete in a slab that measures 2' x 4' x 4" thick.
I am pricing out a job and have two different size stones to work with, the second stone measures
2' x 2' x 4". Harley Weston lui répond. 





.5 cu ft of sand to lbs. 
20080525 

rogersimmons pose la question : needtocovert .5 cu ft. of sand into lbs. Penny Nom lui répond. 





Volume/weight of a salt shedweight 
20080521 

James pose la question : How do I find the volume/weight of a salt shed. I have a 3000 ton barn, I need a better way of finding how much salt to order as it gets used. I know how to calculate volume, how do i get tonnage from there?? Harley Weston lui répond. 





The weight of a concrete column 
20080511 

russell pose la question : a cylindrical form is filled with a slow curing concrete. The base of the form
is 10 ft in radius, and height is 25 ft. while the concrete hardens, gravity
causes the density to vary from a density of 90 lbs/ft^3 at the bottom to a
density of 50 lb/ft^3 at the top. Assume that the density varies linearly
from the top to the bottom, and compute the total weight of the resulting
concrete column Harley Weston lui répond. 





Converting metric density 
20080428 

Hilary pose la question : 10g/100ml=?g/?l
52g/100ml=?g/?l
65g/100ml=?g/?l
100g/100ml=?g/?l
137g/100ml=?g/?l
0.15g/100ml=?g/?l Penny Nom lui répond. 





A 13 cubic foot cylinder filled with sand 
20080412 

Thomas pose la question : I have a 100 pound bag of sand. I need to know how much sand I will need to fill a 13 cubic foot cylinder Harley Weston lui répond. 





The weight of 1 litre of milk 
20080407 

IMRAN pose la question : WHAT WEIGHT IN KILOGRAMS DOES 1 LITRE OF MILK HAVE? Penny Nom lui répond. 





A car tire full of concrete 
20080327 

robert pose la question : I want to build a volleyball net support. I am using a car tire 24"odx16"id filled with concrete. how much will this weigh? thanks Penny Nom lui répond. 





A ton of carbon dioxide 
20080311 

claire pose la question : I want to know the size of a box if it contained a ton of Co2? Stephen La Rocque lui répond. 





Bubbles trapped in the volumetric pipet 
20080131 

Nursing pose la question : In determining the density of a liquid, a student left air bubbles trapped in the volumetric pipet. Did this give a density less than expected or greater than expected? Why? Penny Nom lui répond. 





The volume of a tank 
20080127 

Fred pose la question : A cubic tank holds 1,000 kilograms of water what are the dimensions of the tank in meters? Harley Weston lui répond. 





Converting mg's to cc's 
20080117 

sandy pose la question : i need to find out how to convert mg's to cc's i need to give 10 mg of liquid and 5 mg of liquid and i only have a dropper that measures cc's please help Stephen La Rocque and Harley Weston lui répond. 





Density 
20071129 

jessuca pose la question : what is the density for 40g / 2 mL Penny Nom lui répond. 





I know it's heavy, but how heavy, per linear foot? 
20071119 

Gary pose la question : I am trying to find out the weight of a linear foot of a steel bar with the following measurements.
Thickness  1.125"
Length  120"
Height  18"
Density of carbon steel  .2837
I know it's heavy, but how heavy, per linear foot? Stephen La Rocque lui répond. 





A mole of hydrogen peroxide 
20071111 

John pose la question : i need to get a mole of hydrogen peroxide, which i know is 34g, but i don't have a way to measure grams, so do you know how many mililiters i need to have 34g of hydrogen peroxide. Thanks for all the help Stephen La Rocque lui répond. 





How do i convert milliliters to grams for water and also for copper sulfate (CuSO4)? 
20071111 

jenn pose la question : how do i convert milliliters to grams for
water and also for copper sulfate (CuSO4)? Harley Weston lui répond. 





Density 
20071030 

Ali pose la question : Would an object sink or float in pure water if it has a mass of 10g and a volume of 5 cubic centimeters?
314 Stephen La Rocque lui répond. 





How many tons of asphalt are in 12 cubic yards? 
20071015 

Matthew pose la question : I want to know how many tons of asphalt are in 12 cubic yards? Penny Nom lui répond. 





A 3 ounce piece of gold 
20070924 

Helen pose la question : What would the volume (in mL) of a 3 ounce piece of gold be?
16oz= 1lb
1lb= 454oz.
first i converted 3oz to lbs and then to grams to get the mass. i got 85.125 g.
now i don't know how to get the density to get to the volume. Stephen La Rocque lui répond. 





Volume, mass and density 
20070914 

Nathan pose la question : I have a sample of material that is 10cmx10cmx5cm and has a mass of 29 grams. How many grams would a sample of the same material that was 96cmx188cmx5cm be? Penny Nom lui répond. 





How much stone will be needed to fill the trench? 
20070914 

Debbie pose la question : A trench 100metres long 1ft wide*18inches deep with a 4inch pipe laid. How much stone will be needed to fill the trench.
How much weight in stone would I need to fill it? Penny Nom and Victoria West lui répond. 





Is it platinum or silver? 
20070914 

Jordan pose la question : In Chemistry we are doing a lot of problems that are much more math related than anything. One of my questions reads: A certain medallion has a mass of 55.64 g. When placed in 75.2 mL of water in a graduated cylinder,
the water level rises and then reads 77.8 mL.
Is the medallion made of platinum (D=21.4 g/mL) or silver (D= 10.5 g/mL)? Penny Nom lui répond. 





What was the water level in the cylinder? 
20070911 

glen pose la question : After a 5.63g sample of Wood's metal has been added to the water in a 10mL graduated cylinder, the new water level is 8.7mL. What was the water level in the cylinder before the sample was added? Stephen la Rocque lui répond. 





Grams of vodka 
20070710 

Andrew pose la question : milliliters to grams..vodka 80 proof? Stephen La Rocque lui répond. 





Tons of concrete 
20070703 

Trey pose la question : I have 300,000 square feet of concrete and want to know how to convert this to tons? Harley Weston lui répond. 





How do I convert milliliters(powder form) to grams? 
20070628 

ed pose la question : How do I convert milliliters(powder form) to grams Harley Weston lui répond. 





How many tons of sand? 
20070619 

Richard pose la question : I need to know how many tons of sand it would take to fill a container 20 feet
long, 20 feet wide, and 6 inches deep. I am not sure of the makeup of the sand as
far as dry, loose, wet, etc. If you could give me calculations of all the variants it
would be appreciated. Stephen La Rocque and Penny Nom lui répond. 





The number of grams of sulfuric acid 
20070531 

cookie pose la question : Hi,
Can you please let me know if I've done this correctly?
Calculate the number of grams of sulfuric acid in 0.500L of battery acid if the solution has a density of 1.28 g/mL and is 38.1% sulfuric acid by mass. Stephen La Rocque lui répond. 





How many tons of dirt is this? 
20070523 

Deb pose la question : I need to know how many tons of dirt(6 inches deep)would it take to cover 8 acres? Stephen La Rocque lui répond. 





Converting mass of sand to volume (a sand ceremony) 
20070521 

Linda pose la question : I'm getting married. We are having a sand ceremony. The empty bottle we are using holds 800ml. I have bags of colored sand. Each bag is 30g. There is 7 people participating in this ceremony. What I need to find out is how many grams of sand i need for 7 people to participate to fill this jar. Penny Nom lui répond. 





A ton of sawdust 
20070510 

David pose la question : I am trying to do a conversion. A tractor trailer is loaded with 165 cubic
yards of sawdust (I do not know the actual weight). I knw the wholesale
cost as $1,000 for this amount, but would like to convert this to find out
what the equivalent cost for a metric ton would be. Stephen La Rocque lui répond. 





How many tons of sand is needed 
20070425 

Jennifer pose la question : How many tons of sand is needed to cover 350 cubic square feet? Penny Nom lui répond. 





How can I convert milliliters to grams? 
20070418 

April pose la question : What if I'm using cow's milk, how can I convert milliliters to grams? Stephen La Rocque lui répond. 





Yards of sand in a ton 
20070409 

Teresa pose la question : how many yards of sand are in a ton and how many yards of limestone does it take to make a ton Penny Nom lui répond. 





Concrete sand 
20070308 

david pose la question : Can you tell me how much 4 cubic yards of concrete sand ways in tons? THANK YOU. Stephen La Rocque lui répond. 





Centimeters to cubic meters and grams to kilograms 
20070214 

Colleen pose la question : A box of balls measures 120cm by 20cm by 20cm and weighs 48 g. One thousand boxes = x cubic meters and weighs x kilograms. Also, one million boxes = x cubic metes and weighs x kilograms. One billion boxes = x cubic meters and weighs x kilograms. Solve for x. Stephen La Rocque lui répond. 





Density 
20070209 

Judy pose la question : How do I calculate the mass in grams of 125mL of chloroform when d=1.49g/mL. Stephen La Rocque lui répond. 





The density of an irregular wooden block 
20070130 

Carlos pose la question : I'm trying to help my son but I don't really have too much knowledge about this topic. he is been asked to convert 10 milliliter to gram, I think that since 1 g = 1ml the answer will be 10 g also there is another question of how of the density of an irregular wooden block is affected if: a) the center is hollow: b) the block is not completely submerged when determining the volume. Stephen La Rocque and Penny Nom lui répond. 





I want to convert milliliters into grams. 
20061214 

Kenchotenzin pose la question : I want to convert milliliters into grams. Penny Nom lui répond. 





What is the diameter of the planet? 
20061207 

Niall pose la question : In April 2005, scientists claimed to have captured light from an extrasolar planet orbiting a brown dwarf in the constellation Hydra some 230 lightyears from Earth. The scientists believe the planet is about five times the mass of Jupiter.
Assume the planet has the same density as Jupiter. What is the diameter of the planet? Stephen La Rocque lui répond. 





Two problems involving density 
20061006 

Patricia pose la question :
1. Nick has to ship 650,000 g of substance A to Singapore. The density of substance A is 3.23g/cm^3. If the delivery charge is 0.25 centavo per cm^3,how much does he need to pay?
2.Ann ordered 150 balloons for a birthday. Each balloon has a radius of 20cm. If the density of helium is 0.124g/cm^3,how many grams of helium is needed to meet the order?
Stephen La Rocque lui répond. 





How much does 1300cc of liquid weigh? 
20060428 

Debra pose la question : How much does 1300cc of liquid weigh, and how is the formula equated? Stephen La Rocque lui répond. 





I need to order sand for playgrounds 
20060118 

Jody pose la question : I need to order sand for playgrounds. I have their square footage and the various depths of sand needed for each, but sand comes in tons.
What is the formula for converting square footage and depth to tons (for example: 6 inches of sand needed for a 200sq ft area = how many tons?) Penny Nom lui répond. 





Spraying roses 
20050303 

A student pose la question : A litre and a half of water has 0.045 grams of herbicide added for spraying roses. How many grams of herbicide per litre is this? Penny Nom lui répond. 





1/4 tsp salt = ??? grams 
20041116 

Julie pose la question : if i have 1/4 teaspoon of salt how many grams does that equal Penny Nom lui répond. 





A probability density function 
20040414 

A student pose la question : The label on a bottle of liquid detergent shows contents to be 12 ounces per bottle. The production operation fills the bottle uniformly according to the following probability density function:
f(x) = 8 for 11.975 <= x <= 12.10
and
f(x) = 0 elsewhere
a. What is the probability that a bottle will be filled with 12.02 or more ounces?
b. What is the probability that a bottle will be filled between 12 and 12.05 ounces?
c. Quality control accepts production that is within .002 ounces of number of ounces shown on the container label. What is the probability that a bottle of this liquid detergent will fail to meet the quality control standard? Penny Nom lui répond. 





A snowball melts 
20031211 

Adam pose la question : A spherical snowball has diameter 10cm and density 0.75g/cm3. It is placed in a cylindrical can with diameer 12cm. After the snow melts it turns to water with density 1.0g/cm3. What will be the depth of the water in the can (to 1 decimal place)? Penny Nom lui répond. 





A fish tank 
20031126 

Bill pose la question : How do I work out the volume and weight of water in a fish tank that is 36in x 14in x 12in? Penny Nom lui répond. 





Density 
20030219 

Rob pose la question : What is the formula for converting cubic feet to pounds? (with any substance) Penny Nom lui répond. 





Mass of the earth 
20000221 

Terry Broughton pose la question : My name is terry i am 15 my question is how much does our planet earth weigh ? Chris Fisher and Harley Weston lui répond. 





Who is right 
19990904 

rf, k, p and uncle a pose la question : Good morning. Could you please, help us resolve and by the way, confirm "who is right"... regarding the solution of this problem:  a piece of metal is 6 in. wide by 2 in. in height and weights 500 pounds...  what is the weight of a piece made of same metal, 5 in. wide by 1 3/4 in in height? Could you please supply the "formula". Regards, rf, k, p and uncle a. Penny Nom lui répond. 

