if slant height of the cone is 21 cm and the diameter of the base is 24 cm the total surface
area of cone
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Step-by-step explanation:
slant height of cone ( l ) = 21 cm
diameter of cone = 24 cm
radius = 24 / 2 = 12 cm
A.T.Q
surface area of cone = πrl
= 22/7 × 12 × 21
= 22 × 12 × 3
= 792 cm ans.
I hope it will help you buddy .
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