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d1i1m1o1n [39]
3 years ago
10

X2 +y2 =49 r=___________________

Mathematics
1 answer:
Nastasia [14]3 years ago
5 0

Answer:

r = 7

Step-by-step explanation:

The equation of a circle centred at the origin is

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

x² + y² = 49 ← is in this form

with r² = 49 ⇒ r = \sqrt{49} = 7

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