Question

The paint in a centain container is surface to paint an area equal to 9.375m² . How many brik of dimensions 22.5 cm× 10cm× 7.5cm can be painted out of this cobtainer.​

Answer 1

Answer:

Volume of paint = 9.375 m2 = 93750 cm2

Dimension of brick = 22.5 cm×10 cm×7.5 cm

Total surface area of a brick = 2(lb + bh + lh) cm2

= 2(22.5×10 + 10×7.5 + 22.5×7.5) cm2

= 2(225 + 75 + 168.75) cm2

= 2×468.75 cm2 = 937.5 cm2

Number of bricks can be painted = 93750/937.5 = 100