







A circle in a square 
20200402 

Sabra pose la question : Hello, I have twins in the 7th grade that are learning how to find
circumference of circles. I am struggling with figuring out how to
help my children to find the answer to this question:
Tye has a square piece of yellow felt that has an area of 81
square inches. She wants to cut the largest circle possible from the
material to create a sun for her art project. What is the area of the felt
circle? Use 3.14 for pi. Round to the nearest hundredth if necessary.
I wasn't sure if I am to find the area of the circle through finding the
area of the square or what steps we needed to follow to find the
answer. Once I can see how one is worked out stepbystep, I
usually can help them along with questions that are similar. Penny Nom lui répond. 





Four digit combinations from 13480 
20200326 

nancy pose la question : Good evening. I'm in a quandry. Can you help? I would like to know what 4digit combinations can be derived from 13480 no repetitions Penny Nom lui répond. 





The center and radius of a circle 
20200325 

Riley pose la question : so it says find the center and the radius of the below circle
x^2+(y6)^2=121
i need help learning how to solve this Penny Nom lui répond. 





A hemisphere and a cylinder 
20200323 

Monalizsha pose la question : Wat is the volume and the surface area of the hemisphere and cylinder (both are together)
The height is 12cm of the cylinder and the diameter is 6cm Penny Nom lui répond. 





Aaron and Bill's ages 
20200312 

Heather pose la question : My granddaughter had this third grade math problem. Aaron is 4 times as old as his brother Bill. In ten years Aaron will be twice Bills age. What are their ages? Penny Nom lui répond. 





Sixdigit telephone numbers 
20200312 

Lulamile pose la question : What is the probability that a sixdigit telephone number has no repeated digits? The telephone number cannot begin with a zero Penny Nom lui répond. 





A times table in base 5 
20200311 

Felix pose la question : Design a time table for numbers 110 in base 5 Penny Nom lui répond. 





Is there an equation to find what percent of 0 is 1? 
20200309 

Asher pose la question : Question: Is there an equation to find what percent of 0 is 1.
I remember learning quite a long time ago that the answer inst 0 and it isn't infinity. I'm pretty sure it was something like %=0 approaching infinity or %=1 approaching infinity. And I know it depends what value you assign the numbers i.e. dollars or temperature. Furthermore, is asking "what percent 1 dollar is of 0 dollars" the same question as "what percent profit do you make from selling something worth 0 dollars for 1 dollar."
Thank you for your time and consideration
Asher Penny Nom lui répond. 





Sam and Claudia go on a bike hike 
20200303 

Christie pose la question : Sam and Claudia start at the same time on a bike hike of 150 miles. Sam travels 3 miles per hour faster than Claudia and finishes the trip 8 1/3 hours before Claudia. At what rate in miles per hour does Sam travel? Penny Nom lui répond. 





Covering 1 acre, 6" deep 
20200302 

Jim pose la question : How many cubic yards does it take to cover 1 acre 6" deep.
Thank you Also, can you show me how you determined that answer. Penny Nom lui répond. 





Fireman Fred needs to stay fit 
20200302 

Chamundeswari pose la question : How do I explain this problem to a year 3 kid?
Fireman Fred needs to stay fit for his job. He runs 4.5km, 4 mornings, a week . if it takes him 4 minutes and 15 seconds on average to run 1km, how much time does he spend running over 4 weeks? Penny Nom lui répond. 





The volume of a berm 
20200228 

jason pose la question : how much dirt is in an 20'w 12't 1350'l berm Penny Nom lui répond. 





A straight line graph 
20200226 

Penehafo pose la question : I have a problem of drawing a straight line graph by the equation y=2x1 Penny Nom lui répond. 





The height of an isosceles triangle 
20200223 

Reagan pose la question : I need to find the height of an isosceles triangle with a base of 6 and sides of 4 units. How do I find it? Penny Nom lui répond. 





Degrees, minutes and seconds 
20200221 

Jonathan pose la question : If a cone has an angle of 22 degrees, when i place it flat on a surface, the new resulting central angle is now at 68.69123834, but how come when i saw it on my friend it say 68 degree and 40 minutes, what is this minute? Penny Nom lui répond. 

