Volume of sphere

How many times does the volume of a sphere increase if its radius increases 2 ×?

Correct answer:

n2 =  8

Step-by-step explanation:

n1=2 r1=1 r2=n1 r1=2 1=2  V1=43 π r13=43 3.1416 134.1888 V2=43 π r23=43 3.1416 2333.5103  n2=V2/V1=33.5103/4.1888=8   Verifying Solution:  n2=n13=23=8

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