Question

What is the surface area of the cube

Answer 1

Your answer to this question is C 

Answer 2

Hello!

To find the surface area of a cube you use the equation

$6 a^{2}$

a is a side length

Put in the values we know

$6* 9^{2}$

Square the 9

6 * 81 = 486

The answer is $C)486 mm^{2}$