Question

If h ,c ,V are respectively the height the curved surface and volume of cone prove that 3πVh^3-C^2h^2+9V^2=0

Answer 1

Answer:

Curved surface area of a cone , c = rl

Volume of a cone , V = r2h

L.H.S.= 3Vh3 - c2h2 + 9V2

= 3h3  - (rl)2h2 + 9 

= 2r2h4 - 2r2h2l2 + 9 

= 2r2h4 - 2r2h2(r2 + h2) + 2r4h2 (Since, l2 = r2 + h2)

= 2r2h4 - 2r4h2 - 2r2h4 + 2r4h2 = 0 = R.H.S.

Answer 2

Answer:

Here is ur answer, Mark me as brainliest and follow me❤❤❤❤