Question

what is the cost of laying the floor of a assembly hall 20m long and 18 m wide,at the rate of ₹90 per sq m ?​

Answer 1

Step-by-step explanation:

Solution: Length of one diagonal, d1 = 45 cm and d2= 30 cm

Area of one tile = 1/2 d1 d2

= ½ x 45 x 30 = 675

Area of one tile is 675 cm^2

Area of 3000 tiles is

= 675 3000 = 2025000 cm^2

=2025000/ 10000

= 202.50 m^2

Cost of polishing the floor per sq. meter = 4

Cost of polishing the floor per 202.50 sq. meter = 4 x 202.50 = 810

Hence the total cost of polishing the floor is Rs. 810.

Answer 2

Answer:

32400

Step-by-step explanation:

please mark me as brainlist

hope it's helpful