Question

What is the cost of laying the floor of a school assembly hall 20 m long and 18 metre wide at the rate of rupees 90 per square metre

Answer 1

area=lb
=20*18
=360m²
rate for laying per m²=rupees 90
so,
cost =360*90
=rupees 32,400

Answer 2

Step-by-step explanation:

area of the floor: lb

=20×18

=360

cost of laying= area × cost

=360×90

=32400