SOLUTION: True or false: The circle x^2 + y^2 = 7 has radius 7. If false, give the correct value of the radius.

Algebra ->  Circles -> SOLUTION: True or false: The circle x^2 + y^2 = 7 has radius 7. If false, give the correct value of the radius.      Log On


   

Question 616274: True or false: The circle x^2 + y^2 = 7 has radius 7. If false, give the correct value of the radius.
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
This is false since the radius of x^2 + y^2 = r^2 is 'r'. In this case, r = sqrt(7)

So the correct answer is that the radius is sqrt(7) units long.