The paint in a certain container is sufficient to paint on area equal to `9. 375 m^2dot` How many bricks of dimension `22. 5 c m xx 10c mxx 7. 5 cm ` can be painted out of this container?

Explanation

Given
Total Area to be painted as `= 9.375 m^2 = 93750 cm^2`
Dimensions of brick `= 22.5 cm×10 cm×7.5 cm`
Now,
Total surface area of a brick `= 2(lb + bh + lh) cm^2`
`= 2(22.5 xx 10 + 10 xx 7.5 + 22.5 xx 7.5) cm^2`
`= 2(225 + 75 + 168.75) cm^2`

`= 2 xx 468.75 cm2 = 937.5 cm^2`

So,
Number of bricks can be painted `= 93750/937.5 = 100`
Hence the required answer is `100`.