The volume and curved surface area of a right circular cone are equal If
height and radius of that cone are h and r respectively then the value of
2+ℎ
2
2ℎ2 will be
Answers
Answered by
1
Area (C.S.A) of cone =πr
h
2
+r
2
Volume of cone =
3
π
r
2
h
⇒3πvh
3
+9v
2
−s
2
h
2
=(3π×
3
π
×r
2
h×h
3
)+[9(
3
π
)
2
r
4
h
2
]−[π
2
r
2
(h
2
+r
2
)×h
2
]
=π
2
r
2
h
2
[h
2
+r
2
−h
2
−r
2
]⇒
0
Area (C.S.A) of cone =πr
h
2
+r
2
Volume of cone =
3
π
r
2
h
⇒3πvh
3
+9v
2
−s
2
h
2
=(3π×
3
π
×r
2
h×h
3
)+[9(
3
π
)
2
r
4
h
2
]−[π
2
r
2
(h
2
+r
2
)×h
2
]
=π
2
r
2
h
2
[h
2
+r
2
−h
2
−r
2
]⇒
0
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