Question

Can anyone help identify the center & radius of both pls

Answer 1

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