Question

the paint in a certain container is sufficient to paint an area equals to 9.375m² how many bricks of dimension 22.5cm*10cm*7.5 can be painted out of the container.

Answer 1

Answer:

-brick in square metres then divide the area covered by the paint by the surface area of one brick.

The brick is (0.225m x 0.10m x 0.075m )

Surface area of the top (and bottom) is 0.225*0.10=0.0225 square metres.

Area of the front (and rear) is 0.225 * 0.075 = 0.016875 Square metres.

Areas of the end (same for other end) is 0.10 * 0.075 = 0.0075 square metres

Total surface area of a brick is 2*0.0225 + 2*0.016875 + 2*0.0075 = 0.09375 square metres

Bricks to be painted = 9.375 /0.09375 = 100

Answer 2

Hi dear here is your answer.