Question

How much material will Sara use to a cardboard jewelry box that is 6 cm by 6 cm by 3 cm?

Answer 1

Surface area problem!

Explanation:

First, we'll need to essentially split up the parts of the figure. We'll denote each side as `S1` etc.

`S1`:
= `6x6`
= `36 cm^2`
= `36 * 2`
= `72 cm^2` (since there are two of these sides)

`S2`
= `6x3`
= `18`
= `18 * 4` (there are four of these sides)
= `72`

`therefore SA = 144 cm^2`