Question

Which of the following is a formula for the surface area, S, of a cube with edges of length 2x?

a. S=24x
b. S=24x^2
c. S=12x
S=12x^2

Answer 1

The formula for the surface area, S, of a cube with edges of length 2x is:

S = 6(2x)^2

Simplifying the expression inside the parentheses gives:

S = 6(4x^2)

Multiplying 6 by 4x^2 gives:

S = 24x^2

Therefore, the formula for the surface area of a cube with edges of length 2x is S = 24x^2, which is option (B).

Explanation: