Question

A rectangular prism has a base that measures 8 centimeters by 4 centimeters and has a height of 3 centimeters. The prism is filled with ½ centimeter cubes.

A. How many layers of cubes will there be?
B. What is the perimeter of the base of this rectangular prism in centimeters?

Answer 1

A. There will be 6 layers of cubes because each cube has a height of 1/2 and 3x2=6

B. The perimeter of the base is 24cm.

2l+2w=p
2(8)+2(4)=p
16+8=p

Answer 2

A. 6

There will be 6 layers of cubes, since the height is 3 centimeters and the height of the cubes is 1/2

B. 24

The perimeter is the formula 2l+ 2w. With the length and width being 8 and 4, you get 16+8 which is 24 for the perimeter of the base