Question

find the total surface area of a cone is short height is 21 metre and diameter of the base is 24 m

Answer 1

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diameter=24m.

therefore radius=12m.

slant height(l)=21m.

thus total surface area of the cone=pi(r)(l+r).

  =22/7(12)(21+12).

  =22/7(12)(33)

 =1244.57m2.



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Answer 2

your solution dear..