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Oksanka [162]
3 years ago
10

What is the radius of the circle x2 + y2 -1=0?

Mathematics
2 answers:
mafiozo [28]3 years ago
6 0

Answer:

radius = 1

Step-by-step explanation:

x^2 + y^2 -1=0

Add 1 to each side

x^2 + y^2 -1+1=0+1

x^2+y^2 = 1

This is written in the form

(x-h)^2 + (y-k)^2 = 1^2  where (h,k) is the center and r is the radius

The center is (0,0) and the radius is 1

Montano1993 [528]3 years ago
5 0

Answer: 1

Step-by-step explanation:

rewrite x^2 + y^2 -1 = 0 as x^2 + y^2 = 1

the 1 on the right hand side of the equation is equal to the radius squared

1 = r^2

r = 1

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