Question

How many square of side 5cm are required to cover a rectangle floor measuring 25mby 10m

Answer 1

area of the rectangle floor=25x10=250m=25000cm square
area of tile=25cm square
tiles required=25000÷25=1000tiles.

ans:1000

Answer 2

Given :

a rectangle floor measuring 25mby 10m

To Find:

How many square of side 5cm are required to cover a rectangle floor

Solution:

Length of floor = 25 m

Breadth of floor = 10 m

Area of floor = $Length \times Breadth = 25 \times 10 = 250 m^2$

Side of square tile = 5 cm =0.05

Area of square = $Side^2 = 0.05^2 = 0.0025 m^2$

No. of squares required =$\frac{250}{0.0025}=100000$

Hence 100000  square of side 5cm are required to cover a rectangle floor measuring 25mby 10m