Question

A cube has a surface area of 100 square inches. Which choice is closest to the length of an edge of the cube?

Answer 1

4.1 rounded and that is the answer for ttm

Explanation:

Answer 2

4.08 inches.

Explanation:

A cube has six sides, and each of the sides has area of
`a^2`, where
`a` is the length of the edge of the cube.

Thus the total surface area of the cube is

`A=6a^2.`

Now we are told that this surface area is 100 square inches, therefore
`A=100`, and now we can solve for
`a`:

`a=\sqrt{(A)/(6)} = \sqrt{(100)/(6)}=\boxed{4.08\: inches.}`