The length of the radius of a circle with a center at 2 – i and a point on the circle at 8 + 7i is: 10.
Length
Using distance between points formula
Distance=√[(x2-x1)²+(y2-y1)²]
Let plug in the formula
Distance=√[(8-2)² +(7+1)²]
Distance=√6²+8²
Distance = √36+64
Distance=√100
Distance=10
Therefore the length of the radius of a circle with a center at 2 – i and a point on the circle at 8 + 7i is: 10.
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