Please do the attachment for points, and give a good answer

The volume of a cube is 8 in to the 3rd power. how long is each side?

You dug a hole that was 8 feet deep. after taking a short break, you dug down 3 more feet in the same hole. when finished digging, a tractor accidentally filled the hole with 4 feet of dirt. how deep is your hole now?

Urgent? will give brainliest to the first correct answer what is the area of the figure?