Question

a box spring in the shape of a rectangular prism has a length of a 40 in., a width of 80 in., and a height of 4 of 9 in. what is the surface area of the box spring?
A) 8,560
B) 9,600
C) 19,200
D) 28,800​

Answer 1

19,200 ! To get the surface area of the rectangular prism you have to get the area of each side. Length x Width x Sides(6 in your case).