Deanna L. answered • 09/18/15

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Electrical engineering major and music lover with MIT degree

Shivangi,

There's definitely a formula but not much algebra. You have 22.5 cubic feet of cement to fill eight holes that are all cubes, and each hole is the same shape so they each use 2.8125 cubic feet. The volume of each hole is base*height where the base is the side of the square, squared. I guess your best formula is side^2*height=volume.

Here height is 1.25 and volume is 2.8125, making side^2=2.25 and the side 1.5 feet.

Hope that helps!