what is a formula to calculate area of sphere
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Answer:The formula for the circumference of a circle of radius R is 2*Pi*R.
Step-by-step explanation: 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.
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surface area of sphere=4πr3
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