Question

amt general comp 11: question 27 of 60
what is the surface area of a cube where a side (edge) measures 7.25 inches?
a 381.078 cubic inches.
b 315.375 square inches.
c 52.5625 square inches.

Explanation:

Step1: Recall the formula for the surface area of a cube

The surface area formula of a cube is \(SA = 6s^{2}\), where \(s\) is the length of the side of the cube.

Step2: Substitute the given side length into the formula

Given \(s = 7.25\) inches. First, calculate \(s^{2}=(7.25)^{2}=7.25\times7.25 = 52.5625\).
Then, calculate \(SA = 6\times52.5625\).
\(6\times52.5625=(6\times50)+(6\times2.5625)=300 + 15.375=315.375\)

Answer:

B. 315.375 square inches.