Find CSA and TSA of a solid cone whose height is 28cm and radius is 21

1.	Find CSA and TSA of a solid cone whose height is 28cm and radius is 21cm.
Answer» Csa of cone = π r l l\u200b\u200b\u200b\u200b\u200b\u200b2=(28)2+(21)2 l\u200b\u200b\u200b\u200b\u200b\u200b\u200b\u200b\u200b\u200b\u200b\u200b2=784+441 l =√1225=35CSA of cone=22/7×21×35 =22×21×5 =2310sq cmTSA = π r(l+r) =22/7×21(35+21) = 66×56 =3696sq cm\xa0\xa0 CSA=2310 cm sq, TSA =3696 cm sq

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