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State the radius of this circle: X^2 +Y^2=121
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4 votes
State the radius of this circle:
X^2 +Y^2=121

User Exscape
by
6.0k points

1 Answer

2 votes

Answer:

radius = 11

Explanation:

The equation of a circle centred at the origin is

x² + y² = r² ( where r is the radius )

x² + y² = 121 ← is the equation of a circle centred at the origin

with r² = 121 , then

r =
√(121) = 11

User Tejay Cardon
by
5.3k points
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