CBSE Class 8 Answered

The answer provided below is regarding the Math question posted.

Area that can be painted = 9.375 sq. m = 93750 sq. cm

For a brick,  length = 22.5 cm, breadth, b = 10 cm and height, h = 7.5 cm

Surface area of the brick = 2(lb + bh + lh)

= 2(22.5 x 10 + 10 x 7.5 + 22.5 x 7.5) sq. cm

= 2(225 + 75 + 168.75)

= 2 x 468.75

= 937.5 sq. cm

Now, number of bricks required

= 100