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10 votes
Give the center and a point on the circle:

Center (10, 9) and Point on Circle (4, 7)

What is the radius2

User Mighq
by
4.6k points

1 Answer

7 votes

Answer:

Explanation:


(x-h)^2+(y-k)^2=r^2\\ \\ (x-10)^2+(y-9)^2=r^2\\ \\ (4-10)^2+(7-9)^2=r^2\\ \\ 36+4=r^2\\ \\ r^2=40

User Engine
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