Question

question 5 of 10
what is the surface area of the cube below?
a. 50 units²
b. 75 units²
c. 300 units²
d. 150 units²

Explanation:

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

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

Step2: Identify the side - length of the cube

From the problem, the side - length \(a = 5\).

Step3: Substitute the value of \(a\) into the formula

Substitute \(a = 5\) into \(S=6a^{2}\), we get \(S = 6\times5^{2}\).
First, calculate \(5^{2}=25\). Then \(6\times25 = 150\).

So the surface area of the cube is \(150\) units².

Answer:

D. 150 units²