Answer:
radius, r = 10
Explanation:
general equation of a circle is,
(x - h)² + (y - k)² = r²
where, (x, y) are the co - ordinate points
(h, k) is the center of the circle
according to the question,
(x, y) = (-8, 6)
(h, k) = (0, 0)
substituting the values in the equation,
(-8 - 0)² + (6 - 0)² = r²
(-8)² + (6)² = r²
64 + 36 = r²
r² = 100
thus, radius, r = √100 = 10