3 years ago

The endpoints of a diameter of a circle a(-1,1) and b(3,3). what is the length of the radius

1 answer:

6 0

If we determine the distance from one point to the second point, we get the length of the diameter. This is calculated through the equation,

D= sqrt ((x2 – x1)^2 + (y2 – y1)^2)

Substituting the known values,

D = sqrt ((-1 – 3)^2 + (1 – 3)^2)

D = 4.47

The length of the radius is half that of the diameter. Hence, the radius is,

R = 4.47 /2 = 2.236

Answer: r = 2.24

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