the total surface area of cone, whose radius is r2 and slant height is 2l
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radius of cone= 2
slant height= 21
total surface area=?
total surface area of cone = πr(r+l)
=3.14×2(2+21)
=3.14×2×23
=3.14×46
=144.44
slant height= 21
total surface area=?
total surface area of cone = πr(r+l)
=3.14×2(2+21)
=3.14×2×23
=3.14×46
=144.44
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