Yesterday i was doing the question from class 9^{th} ncert book of math of Surface areas and Volumes chapter of exercise 13.2 What is the easiest way for solving it because i was not able to do this question please help me for solving this question 7(1) The inner diameter of a circular well is 3.5m. It is 10m deep. Find (i) its inner curved surface area, (Assume π = 22/7)

AnilSinghBoraGuru

# The inner diameter of a circular well is 3.5m. It is 10m deep. Find (i) its inner curved surface area, (Assume π = 22/7) Q.7(1)

Share

Inner radius of circular well, r = 3.5/2m = 1.75m

Depth of circular well, say h = 10m

(i) Inner curved surface area = 2πrh

= (2×(22/7 )×1.75×10)

= 110

Therefore, the inner curved surface area of the circular well is 110 m

^{2}.