Math, asked by mohammedkukshiwala53, 4 months ago

if the height of a closed cone is 7 times the radius of it's base find t.s.a

Answers

Answered by luckyprabhu10
1

Answer:

r=3cm

h=7r

=7*3=21cm

l=√h²+r²

=√21²+3²

=√441+9

=√450

=21.21cm

T.S.A of cone=πr(l + r)

                     =π 3(21.21+3)

                     =π 72.63cm

                     =72.63πcm²

Step-by-step explanation:

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