Question

A room is 13.6 M long and 6.4 M wide it is to be paved with square marble tiles each of side 80 cm how many marble tiles will be required?

Answer 1

Area of the floor = lb = 13.6 ×6.4 =87.04 m²

Area of the square tiles = 80 cm = 0.8 m = 0.8² = 0.64 m²

Tiles required = 87.04 / 0.64 = 8704 /64 = 136

tiles required = 136 

Answer 2

Given
Length=13.6m=1360cm
Breadth=6.4m=640cm
A/Q Area of room =lxb
=(1360×640)
=870400cm
Area of square marble tiles = side × side
=(80×80)cm
=6400cm
No.of tiles needed to pave whole room =136