SOLUTION: The diameter of a circle is 10 centimeters greater than the radius. How long is the radius? Thank you! :)

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Question 282542: The diameter of a circle is 10 centimeters greater than the radius. How long is the radius?
Thank you! :)
Found 2 solutions by user_dude2008, dabanfield:
Answer by user_dude2008(1862) About Me  (Show Source):
You can put this solution on YOUR website!
d=2r, d=10+r ----> 2r=10+r ---> r=10, d=2*10=20

Answer: diameter = 20 cm, radius = 10 cm

Answer by dabanfield(803) About Me  (Show Source):
You can put this solution on YOUR website!
The diameter of a circle is 10 centimeters greater than the radius. How long is the radius?
Diameter = 2*Radius so
If R is the radius then:
Diameter = R + 10 = 2*R
2*R - R = 10
R = 10