Question

The paved area is a square with sides 2 m long.

The paving stones for this area are squares that measure 50 cm by 50 cm
How many paving stones are needed?

Answer 1

16 paving stones

Explanation:

1 m = 100 cm

The square has sides 200 cm long

Its area is 200(200) = 40000 sq cm

Each paving stone has an area of 50(50) = 2500 sq cm

So 40000/2500 = 16 paving stones

Answer 2

Explanation:

2 meters = 200 cm

200 cm × (1 block)/(50 cm) = 4 blocks

4 blocks by 4 blocks = 16 blocks