Question

what is the total surface area of a solid sphere of radius r​

Answer 1

ANSWER-

Note: The surface area of the solid sphere with radius r= 4πr2.

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Answer 2

Answer:It is perfectly symmetrical, and has no edges or vertices. A sphere with radius r has a volume of 4 3 π r 3 \frac{4}{3} \pi r^3 34πr3 and a surface area of 4 π r 2 4 \pi r^2 4πr2.

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.