Question

find the cost of painting a circular table top of diameter 1.4 M @ rupees 30 per square metre is equal to 22/7​

Answer 1

area of circular table top=Πr×r
cost per m square=30
cost=Πr×r×30
=22/7×0.7×0.7×30
=22×0.1×0.7×30
=2.2×21
=46.2ANS



HOPE IT HELPS U

Answer 2

Diameter=1.4m
Radius=1.4/2=0.7m
Area of circular table top=Πr²
=22/7×(0.7)²
=1.54 m²

Cost = 1.54×30
=Rs.46.2

Hope it will help you.