SOLUTION: The perimeter of a semicircle is doubled when the radius is increased by one. Find the radius of the semicircle.

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Question 485770: The perimeter of a semicircle is doubled when the radius is increased by one. Find the radius of the semicircle.
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
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The perimeter of a semicircle is doubled when the radius is increased by one.
Find the radius of the semicircle.
:
the perimeter of a semicircle = pi%2Ar
:
2%2Api%2Ar = pi%2A%28r%2B1%29
Divide both side by pi
2r = r+1
2r - r = 1
r = 1 is the radius of the semicircle