charliecute charliecute

14-06-2021
Mathematics

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A circle has a center at (- 2,7). If a point on the circle has coordinates (3,- 1) then what is the length
of the radius of the circle, to the nearest tenth?

Respuesta :

Sdoyle0410 Sdoyle0410

14-06-2021

You can solve this using the equation
r = [(x2-x1)^2+(y2-y1)^2]^(1/2)

y2 = -1
y1 = 7
x2 = 3
x1 = -2

So, your answer should be r = 8.9

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