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# Approximate Change in Volume of a Sphere

SVCALC-81XLRG

A spherical balloon is inflated.

Estimate the volume of air needed to increase its radius from 10 inches to 10.1 inches.

A

$40\pi$ in$^3$

B

$40.1\pi$ in$^3$

C

$100\pi$ in$^3$

D

$400\pi$ in$^3$