Yesterday i was doing the question from class 9th 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 m2.