Find the radius of a circle whose diameter is AB and A (1; 7), B (5; 4).

univerkov | December 13, 2020 | education

Let’s find the length of the segment AB. By the formula for the length of the segment AB = √ ((x2-x1) ^ 2 + (y2-y1) ^ 2)
AB = √ ((5-1) ^ 2 + (4-7) ^ 2) = √ (16 + 9) = 5.
AB – diameter. The radius is half the diameter. Radius = AB / 2 = 5/2 = 2.5
Answer: 2.5

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