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May 30, 2015

Homework Help: Math

Posted by Johnny on Wednesday, September 8, 2010 at 1:31am.

A spherical balloon expands when it is taken from the cold outdoors into a warm house. If the surface area increases by 50% (factor of 1.50), by what percentage does the radius of the balloon change?

a)7.7%
b)50%
c)100%
d)75%
e)22%

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