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Crazy boy [7]
3 years ago
11

If a sphere's surface area is doubled, what is the corresponding change in radius?

Mathematics
2 answers:
geniusboy [140]3 years ago
6 0
The radius is increased by \sqrt(2) times, so b must be the missing choice that we're looking for. The formula for sphere's surface area is 4*pi*r^2. When r is increased to be \sqrt(2)*r, the new surface area becomes 4*pi*(2*r^2)=8*pi*(r^2), doubling the original surface area.
Sonbull [250]3 years ago
5 0
The radius is increased by  sqrt2  times  

It must be b
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