Question

A well 3m in radius and 21m deep is to be dug. Find cost of digging well at Rs. 1.50per cubic m

Answer 1

total volume = π×3×3×21=198 m^3
total cost = 198/1.50= 132 rs

Answer 2

Answer:

• Volume of a well = pie r^h
• =22/7×3^2×21
• =22×9×3
• =22×27
• =594m^3
• cost of 1m^3 well = RS.1.50
• cost of 594m^well =Rs.1.50×5
• Rs.891 ans