Question
Mathematics Question on Mensuration
A well 22.5 deep and of diameter 7m has to be dug out. Find the cost of plastering its inner curved surface at Rs 3 per sq metre.
A
Rs 1465
B
Rs 1865
C
Rs 1475
D
Rs 1495
Answer
Rs 1865
Explanation
Solution
The correct option is (B) :1865