An interesting thing regarding derivatives and real world objects is that the derivative of a sphere's volume with respect to the radius corresponds to its total area.
Considering that the volume of a sphere V can be computed as:
V = 4/3 πr³,
where r is the radius of the sphere, we may conclude that the total area of V is given by:
A. 4πr²
B. 2πr
C. 4πr
D. 3/4 πr²
E. none of the above.
Original idea by: Leandro Ferlin
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