2 years ago

What happens to the volume of a sphere when its radius is doubled?

1 answer:

5 0

Vsphere=(4/3)pir^3

when we replace r with 2r

newvsphere=(4/3)pi(2r)^3
newvsphere=(4/3)pi8r^3
newvsphere=8((4/3)pir^3)
newvsphere=8(vsphere)
it's volume is multipliied by 8

that is choice C, because 2^3=8, it's vollume is 8 times original voluem

answer is C

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