Question

A solid box with height 20cm, width 20cm and length 60cm needs to be painted.

The paint costs £0.16 per cm2.
How much will it cost to paint the outside of the box?

Answer 1

It takes £896

Explanation:

We need to find the surface area of a rectangle.

To find:

2×(60×20 + 60×20 + 20×20)

This equals 5600 cm^2

Now find the cost:

0.16 x 5600 = £896

The answer is 896