The side of a cube measures 2.8 in. Find the surface area of the cube. Round your answer to three decimal places. A) 21.952 in² B) 7.840 in² C) 131.712 in² D) 47.040 in² E) 23.520 in²

Question

Quizplus · Accepted Answer

The surface area of a cube is found by multiplying the length of one of its sides by itself three times (since it has six sides). Therefore, the surface area of a cube whose side measures 2.8 inches is:

SA = 6(2.8)^2
SA = 6(7.84)
SA = 47.04

Rounding this to three decimal places gives an answer of 47.040 in^2, which matches choice D.

The Side of a Cube Measures 2