SOLUTION: The perimeter of a semicircle is doubled when the radius is increased by 3. Find the radius of the semicircle.
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Question 630502: The perimeter of a semicircle is doubled when the radius is increased by 3. Find the radius of the semicircle.
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
The perimeter of a semicircle is doubled when the radius is increased by 3. Find the radius of the semicircle.
p = pi*r + 2r
= r*(pi+2)
----------------
2p = (r+3)*(pi+2)
p = r*(pi+2)
----------------- Subtract
p = 3*(pi+2) = r*(pi+2)
r = 3
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