Question

The surface area of sphere is 64rCm it’s diameter is equal to

Answer 1

Answer:

The area of a disk enclosed by a circle of radius R is Pi*R2. ... Similarly, the volume of a ball enclosed by a sphere of radius R is (4/3)*Pi*R3. And the formula for the surface area of a sphere of radius R is 4*Pi*R2. And, you can check that the latter is the derivative of the former with respect to R.

now u can solve easily

Answer 2

Answer:

T.S.A.=4 pi r^2=4×22/7×64×64=51492.57 cm^2

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