Asked by tasha

A spherical baloon expands when it is taken from the cold outdors to the inside of a warm house. if its suface area increases 16%, by what percentage does the radius change

Answers

Answered by drwls
A2/A1 = 1.16 = (R2/R1)^2
R2/R1 = 1.077

The radius increased by 7.7%
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