Bluebook试题8 · 第 15 题

Bluebook试题8 · 原库模块 1 · Q15 原库参考解析

A circle in the xy-plane has a diameter with endpoints (2, 4) and (2, 14). An equation of this circle is \( \left(x-2\right)^2+\left(y-9\right)^2=r^2 \) , where r is a positive constant. What is the value of r?

Bluebook试题8 · 第 15 题

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