Question

find the cost of plastering the inner surface of a wall diameter 3.5m and depth 10 m a5 the rate of ₹45 per m²​

Answer 1

Answer:

4950₹

Step-by-step explanation:

inner diameter =3.5 m

inner radius = 3.5/2 m

depth = 10 m

curved surface area=2πrh

=2×22/7×3.5/2×10

=110 m^2

cost of plastering per 1m^2=₹45

cost of plastering per 110 m^2= 45×110

= 4950 ₹