A cube has a surface area of 294 sq. in. What is the length of its sides?

The surface area of a cube is:

A=6s^2, where s is the length of a side.

6s^2=A

s^2=A/6

s=√ (A/6), we are given that the area is 294in^2 so:

s=√ (294/6)

s=√49, since s>0

s=7in

So the side length of the cube is 7 inches.