Find the volume,CSA,TSA of right circular cone the radius of whose base is 21cm and height is 28cm solution
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r = 21cm
h = 28cm
l = √(h^2 + r^2)
= √(784 + 441)
=√1225
= 35cm
CSA = πrl
= 22×21×35/7
= 2310cm^2
TSA = πr(l+r)
= 22×21/7(35+21)
= 66×56
= 3696cm^2
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h = 28cm
l = √(h^2 + r^2)
= √(784 + 441)
=√1225
= 35cm
CSA = πrl
= 22×21×35/7
= 2310cm^2
TSA = πr(l+r)
= 22×21/7(35+21)
= 66×56
= 3696cm^2
Plz mark as brainliest
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