Awesome geometry - 2

Geometry Level 5

Point P is in the interior of \angle ABC,

BP = 10 , \angle ABC = 30 ^\circ .

Circle with center P and radius 2 is reflected in rays BA and BC respectively to form circles with centers Q and R .

If A ( B Q R ) A(\triangle BQR) can be expressed as A B A \sqrt{B} where B B is square-free.

Find A + B A + B


Details and Assumptions :

\bullet A ( B Q R ) A(\triangle BQR) denotes area of B Q R \triangle BQR .

This problem is part of set Awesome ' NIHARIAN' geometry


The answer is 28.

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1 solution

Ajit Athle
Feb 2, 2015

BQR is an equilateral triangle of side=10. Hence its area=25√3.

Yeah! You are right.

Nihar Mahajan - 6 years, 4 months ago

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Nice problem Nihar!

Would it be possible for you to post the solution ?

If so, i am eager to know it.

Priyanshu Mishra - 5 years, 8 months ago

Can you please add a Figure?

A Former Brilliant Member - 3 years, 8 months ago

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