Question

the number of bricks to be laid in a square field of side 30 centimetre if the side of is BRICS is 3 cm

Answer 1

n×area of 1 brick=Area of Field.
n=no. of bricks.
3×3×n=30×30
n=100Bricks

Answer 2

Square field sides =30cm
Side of bricks =3cm
Total bricks =30/3=10