$O$ and $P$ are the centres of $2$ circles, with radii $3$ cm and $3.5$ cm respectively. T

Question

$O$ and $P$ are the centres of $2$ circles, with radii $3$ cm and $3.5$ cm respectively. The two circles touch externally at $Q$, and $OM$ is a tangent to the larger circle at $N$. Calculate the length of $ON$.

Accepted Answer

$\sqrt{30}\text{ cm}\approx5.48\text{ cm}$ (3 s.f.)

Applications of Circle Symmetric Property 3

Applications of Circle Symmetric Property 3

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