Question

Which could be the dimensions of a rectangular prism whose surface area is less than 160 square feet? Select two

options.
8 feet by 4 feet by 3 feet
7 feet by 6 feet by 4 feet
03 feet by 7 feet by 8 feet
03 feet by 6 feet by 7 feet
03 feet by 5 feet by 7 feet

Answer 1

8 feet by 4 feet by 3 feet

3 feet by 5 feet by 7 feet

Explanation:

8 feet by 4 feet by 3 feet

A = 2(wl + hl + hw)

A = 2 · (4 · 8 + 3 · 8 + 3 · 4)

A = 136

3 feet by 5 feet by 7 feet

A = 2(wl + hl + hw)

A = 2 · (5 · 3 + 7 · 3 + 7 · 5)

A = 142