Question

Drawing room of Mr. Kapur has a triangular floor of dimensions 7 m, 8 m, 9 m respectively. He wants to cover it with marble tiles of size 20 cm 25 cm. How many tiles does he need to purchase?

Answer 1

Answer:

Area of the floor A=√{s(s-a)(s-b)(s-c)}

s=(7+8+9)/2=12

A=√{12×5×4×3}=12√5 m^2

Area of tiles=0.2×0.25 m^2=0.05

Number of tiles=12√5/0.05