Question

The side of a square tile is 10 cm. How many tiles can be fixed on one side of a wall which is 2.5 m long and 2 m high?

• A. 100
• B. 400
• C. 5000
• D. 500

Answer 1

The correct option is D 500

Length of a square tile = 10 cm = 0.1 m
Area of the square tile $=0.1\times 0.1=0.01m^2$

Length and breadth of wall is 2.5 m and 2 m respectively.
Area of the wall $=2.5\times 2=5m^2$

Number of tiles $=\frac{\text{Area of wall}}{\text{Area of square tile}}$
= $\frac{5}{0.01}$
= 500 tiles