SOLUTION: how do you write r=1 in rectangular form?

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Question 841476: how do you write r=1 in rectangular form?
Found 2 solutions by jim_thompson5910, richard1234:
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
x^2 + y^2 = r^2

x^2 + y^2 = (1)^2 ... plug in r = 1

x^2 + y^2 = 1

This is a circle with radius 1.

Answer by richard1234(7193) About Me  (Show Source):