The diagram shows a circle with centre and a triangle . Side is a tangent to the circle. The area of the circle is equal to the area of the triangle.
What is the ratio of the length of to the circumference of the circle? Give your ratio in its simplest form.
Select one option, then click Submit.
1 : 1
2 : 3
2 : \pi
3 : 2
\pi : 2
Select an option, then submit.
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Senior Mathematical Challenge 2013 (2013)
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