Question

The surface area of a cube can be found using the formula S = 6e. If a cube

has an edge of 3.5, what is the surface area of the cube?

Answer 1

73.5 unit^2.

Explanation:

Area = e^2

Area of one face = 3.5^2 = 12.25 unit^2.

So total surface area = 6 * 12.25

= 73.5 unit^2.

Answer 2

S = 73.5 unit³

Explanation:

`A_(s) = 6e^(2)`

`A_(s) = 6 (3.5)^(2)`

`A_(s) = 6 (12.25)`

`A_(s) = 73.5`