Question

How many square tiles each with a side of 80 cm are required to cover a floor of area 64 sq m?

• A. 50
• B. 100
• C. 150
• D. 200

Answer 1

The correct option is B 100

Given:
Side of the square tile = 80 cm
Area of square slab
= 80 × 80
= 6400 sq cm

Area of floor = 64 sq m

We know that
$1m=100cm1m^2=10,000c{m}^2$

So, 64 sq m = 64 × 10,000
= 6,40,000 sq cm

Number of tiles required
= $640000÷6400$
= 100

Therefore, 100 such square tiles are required to cover the floor.