Question

I know the answer. It's 200 bricks but please tell the process.

Answer 1

Given area that can be painted by the container = 18.75m^2.

                                                                                  = 18.75 * 10000cm^2

                                                                                  = 187500 cm^2.


We know that Total surface area of one brick :

= 2(lb+bh+lh)

= 2(22.5 * 10 + 10 * 7.5 + 22.5 * 7.5)

= 2(225 + 75 + 168.75)

= 2(468.75)

= 937.5 cm^2.


The number of bricks that can be painted = 187500/937.5

                                                                      =  200.


Hope this helps!