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The equation of a circle centered at the origin is x2+y2=64. what is the radius of the circle? A. 64 B. 32 C. 4 D. 8

The equation of a circle centered at the origin is x2+y2=64. what is the radius of the circle? A. 64 B. 32 C. 4 D. 8
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3 votes
The equation of a circle centered at the origin is x2+y2=64. what is the radius of the circle?

A. 64
B. 32
C. 4
D. 8

User Dayum
by
8.7k points

2 Answers

5 votes

Answer:

8

Explanation:

User Shaedrich
by
8.9k points
4 votes
x^2+y^2=r^2
r^2=64
r=√64=8
User Mkearney
by
8.5k points
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