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Question

Find the total surface area of a cone, if its slant height is 21m and diameter of its base is 24 m.

Solution
Verified by Toppr

Given:
R=242=12m, Slant height =21m

Total Surface area of cone =πr(r+l)

=227×12(12+21)m2

=227×12×33m2

=1244.57m2

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