If a box-shaped hole 7 feet long and 3 feet wide holds 168 cubic feet of dirt, how deep must the hole be?

Question

Hole dimensions

Answer 1

You need a volume of 168 cubic feet.  The volume of a box is length x width x height = volume.  

 

Since you already know length x width, and the volume, you can solve for the height as follows.

 

L x W x H = V

7 x 3 x H = 168

21 x H = 168

 

H = 8