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Can anyone help identify the center & radius of both pls

Can anyone help identify the center & radius of both pls-example-1

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6 votes

Answer:

see explanation

Explanation:

the equation of a circle centred at the origin is

x² + y² = r² ( r is the radius )

(1)

x² + y² = 196 ← is in this form

with centre = (0, 0 ) and r =
√(196) = 14

(2)

x² + y² = 100 ← is in this form

with centre = (0, 0 ) and r =
√(100) = 10

User Jberg
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