find volume total surface area of cone whose radius is 12 cm and perpendicular height is 16 cm.
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The height of a cone is 16 cm and its base radius is 12 cm. Find the curved surface area and the total surface area of the cone (Use π=3.14).
December 26, 2019avatar
Rutvee Delhi
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OA=16cm,AB=l
l=
16
2
+12
2
=
256+144
l=20cm
curved surface Area,
C.S.A=πrl=3.14×12×20=753.6cm
2
Total surface Area,
T.S.A=πr(r+l)=3.14×12[12+20]=1205.76cm
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