Question

A solid box with height 90cm, width 60cm and length 30cm needs to be painted.

The paint costs £0.03 per cm2.
How much will it cost to paint the box?

Answer 1

Explanation:

Area = 2LH + 2LW + 2WH

= 2(LH + LW + WH)

=2(30*90+30*60+60*90)

=2(2700+1800+5400)

=2(9900)

=19800cmsquare

Therefore to paint the solid box it will cost

0.03 * 19800

= £594