Question

Greta is painting two different rectangular prisms. The prisms have the following dimensions.

Prism A:

Length: 1 foot
Width: 4 inches
Height: 8 inches

Prism B:

Length: 10 inches
Width: 2 inches
Height: 1.5 feet

Which prism has a greater surface area, and what is its surface area in square inches?

Answer 1

prism B is greater

Explanation:

prism A

lenght: 1×4=4

width: 4×8=32

height: 8×1=8

add them all up and multiply it by 2 = 4+32+8×2=52

prism B

lenght: 10×2=20

width: 2×1.5=3

height:1.5×10=15

add them all up and multiply it by 2= 20+3+15×2=76