Question

A brick measures 20 cm x 10 cm x 7.5 cm. How
many bricks will be required for a wall
20 mx 2 m 0.75 m?
(a) 10000
(b) 15000
(c) 18000
(d) 20000​

Answer 1

Answer:

volume of brick: 20×10×7.5= 1,500cm2

volume of wall : 2,000cm×200cm×75cm=3,00,00,000cm2

now,

number of bricks = volume of wall ÷ volume of brick

= 3,00,00,000÷1,500

= 20,000 bricks

Answer 2

Step-by-step explanation:

this question's answer is option D. 20000