The diameter of the base of a cone is 14 cm and its slant height is 9 cm. find (a) its curved surface area (b) its total surface area.
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CSA = pi*r*l
= 22/7*7*9
= 198 cm^2
TSA = pi*r(r+l)
= 22/7*7(7+9)
= 352 cm^2
= 22/7*7*9
= 198 cm^2
TSA = pi*r(r+l)
= 22/7*7(7+9)
= 352 cm^2
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