Question

Solve for the surface area of the rectangular prism. (1 point)
A drawing of a rectangular prism with length 12 inches, width 5 inches and height 3 inches.

The surface area is
square inches.
Responses
180 square inches
222 square inches
111 square inches
270 square inches

Answer 1

The formula for the surface area of a rectangular prism is 2lw + 2lh + 2wh, where l is length, w is width, and h is height.

Given:
Length = 12 inches
Width = 5 inches
Height = 3 inches

Surface Area = 2lw + 2lh + 2wh
Surface Area = 2(12*5) + 2(12*3) + 2(5*3)
Surface Area = 2(60) + 2(36) + 2(15)
Surface Area = 120 + 72 + 30
Surface Area = 222 square inches

Therefore, the surface area of the rectangular prism is 222 square inches.