Question

Which could be the dimensions of a rectangular prism whose surface area is greater than 140 square feet? Check all that apply.

6 feet by 2 feet by 3 feet
6 feet by 5 feet by 4 feet
7 feet by 6 feet by 4 feet
8 feet by 4 feet by 3 feet

Answer 1

It is 6 feet by 5 feet by 4 feet , 7 feet by 6 feet by 4 feet, and 8 feet by 3 feet by 7 feet (I just took the test)

Answer 2

the second one, ((6 x 5) x 4) +((5 x 4) x 2) = 160

the third one, ((7 x 6) x 4) + (6 x 4) x 2) = 216

the fourth one, ((8 x 4) x 4) + ((4 x 3) x 2) = 152