Question

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The height and the slant height of a cone are 2 lcm and 28 cm respectively. Find the volume of the cone​

Answer 1

Answer:

7546cm^2

Step-by-step explanation:

Given, h1=21 cm

h2=28cm

We know h1^2+r^2=h2^2

so,

21^2+r^2=28^2

=>441+r^2=784

=>r^2=784-441

=>r=√343

Volume=1/3πr^2h1

=1/3π√343^2×21

=1/3π×343×21

=1/3×22/7×343×21

=22×343

=7546 cm^2