







Filling holes with stone dust 
20200730 

Zach pose la question : I’m looking for amount of stone dust needed for thirteen holes with
a 3ft depth and 12in diameter with a 4x4 post. I would need the
measurement in KG. Harley Weston lui répond. 





The wholesale price given the retail price and the markup 
20180207 

Matthew pose la question : Retail $99
Markup is 80%
What is the equation to find the original (wholesale) price (55)?
thanks Penny Nom lui répond. 





Filling three holes with stones 
20140820 

mark pose la question : how many tonnes of hardcore/crushed stone would it take to fill
1 hole 9ft diameter 5ft deep
and 2 holes both 3ft diameter and 5ft deep Penny Nom lui répond. 





Fence post holes 
20120719 

Gerry pose la question : Hello, I'm digging 30 8" dia holes, 5 ft deep for fence posts that are 4"x 4" Can you please help me figure out how much stone dust I should order for all 30 holes. Thanks Penny Nom lui répond. 





Drilling holes in a cube 
20061212 

Liz pose la question : What is the volume of the solid remaining if a unit cube has a hole drilled thru one face to the opposite side and the hole that is drilled is a cylinder of unit diameter. Then the cube is rotated and an identical hole is drilled from an untouched face to the opposite side. Then the cube is rotated and an identical hole is drilled between the last two untouched faces. This will result in the cube vertices and the remaining volume of the cube falling into 8 parts. What is the total volume of these 8 parts. How is this volume calculated? Penny Nom lui répond. 





20 men dig 40 holes in 60 days 
20020724 

Lindsey pose la question : 20 men dig 40 holes in 60 days. So, 10 men can dig 10 holes in how many days? Penny Nom lui répond. 

