Question

If vol. of sphere
is numerically
equal to its surface area. Find its diameter.

Answer 1

Step-by-step explanation:

since volume of sphere=4/3πr×r×r

and surface area=4πr×r

given vol.= Surface area

so 4/3πr^3=4πr^2

r=3

since diameter=2r

=6

ans. 6

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