sonya49 sonya49

08-02-2019
Mathematics

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the points (-8, -1) and (2 ,4) are the endpoints of a diameter of a circle. Find the length of the radius of the circle.

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08-02-2019

Answer:

x = x2 - x1 = -8 -2 = -10

y = y2 - y1 = -1 -4 = -5

diameter = (x^2 + y^2)^1/2 = (100 + 25)^1/2 = 11.18

radius = 11.18 / 2 = 5.59 or 1/2 the diameter.

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