Question

Find the cost of plastering the inner surface of a well at rs 9.50 m square , if it is 21m deep and diameter of its top is 6m

Answer 1

Answer:

₹ 3762

Step-by-step explanation:

cost of plastering =₹9.50m square

height=21m

diametere=6m

.

. . radius=6/2=3m

inner curved surface are =2πrh

2×22/7×3×21=396^2 square m

cost of plastering =396×9.50=₹3762