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Mathematics 25 Online
OpenStudy (anonymous):

a diameter of a circle has endpoints P (-7, -3) and Q (-4, 0). What is the approximate length of the radius?

OpenStudy (phi):

Do you know the "distance formula" to find the distance between 2 points ? If you do, you can find the length of the diameter. the radius will be 1/2 of the diameter's length

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