Question

Find the number of bricks of size 20 cm x 15 cm needed to cover the path of 45 mx 20 m?
(a) 3,000
(b) 30.000
(c) 3,00,000
(d) none of these​

Answer 1

Answer:

first 1 m=100cm

so,45m×20m=4500cm×2000cm

brick size = 20cm×15cm

path size = 4500cm×2000cm

the number of bricks required=(4500cm×2000cm)÷(20cm×15cm)=30,000

so,(b)30,000 is correct