Question

The paint in a certain container is sufficient to paint an area equal to $9.375m^2.$ How many bricks of dimensions $22.5cm\times 10cm\times 7.5cm$ can be painted out of this container?

Answer 1

Given,

Total area can be painted using paint $=9.375m^2=9.375\times {10}^{4}c{m}^2$
$=937.5\times {10}^{2}c{m}^2$

dimensions of brick = $22.5cm\times 10cm\times 7.5cm$

Area of one brick = $2[lb+bh+lh]=2[225+75+168.75]$ $=937.5c{m}^2$

Total bricks to be painted using given point $=\frac{937.5}{937.5}\times {10}^{2}c{m}^2$

Total bricks $=100$