Question

A rectangular room is 7.2 m by 4 m. it is floored with marble of size 60 cm x 40 cm. find : (a) the number of marble pieces. (b) the cost of flooring at the rate of rupees 46.50 per marble piece.​

Answer 1

Answer:

the no. of marble pieces will be 120 and tge cost for 120 marble pieces will be 4878

Answer 2

The number of marble pieces are 120 and the cost of flooring at the rate of rupees 46.50 per marble piece is Rs.5580

Step-by-step explanation:

Length of room = 7.2 m = 720 cm

Breadth of room = 4 m = 400 cm

Area of room =$Length \times Breadth = 720 \times 400 = 288000 cm^2$

Length of marble = 60 cm

Breadth of marble = 40 cm

Area of marble = $Length \times Breadth = 60 \times 40 = 2400 cm^2$

No. of marbles required =$\frac{288000}{2400}=120$

Cost of flooring 1 piece = Rs.46.50

Cost of flooring 120 pieces = $46.50 \times 120 =Rs.5580$

Hence the number of marble pieces are 120 and the cost of flooring at the rate of rupees 46.50 per marble piece is Rs.5580

#Learn more:

A rectangular room is 8.4 m by 4m. It is floored with marble of size 60 cm × 40 cm .find the number of marble pieces

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