Question

The paint in a certain container is sufficient to paint an area equal to 9 375 m. How
many bricks of dimensions 22.5 cm x 10 cm x 7.5 cm can be painted out of this
container​

Answer 1

Answer:

length of brick= 22.5

breadth= 10

height= 7.5

TSA of brick= 2(lb+bh+hl)

2(22.5×10+10×7.5+7.5×22.5)

2(225+75+168.75)

2(468.75)

937.5

no. of bricks = total paint ÷area of brick

9375÷937.5

100 bricks

Answer 2

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