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why do we take area of rod as (Pi*d2/4) why not (Pi*l*r2). sir is it the cross-sectional area??

why do we take area of rod as (Pi*d2/4) why not (Pi*l*r2). sir is it the cross-sectional area??

Grade:12th pass

1 Answers

Sourabh Singh IIT Patna
askIITians Faculty 2104 Points
8 years ago
Hii

As you know area of circular cross section is ^{\Pi{{}r^{2}}} and r = d/2 hence it will be (Pi*d2/4) and the other part is not clearly understandable. So re post the question and we will get back to you.


Thanks

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