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Intermediate

The ball pool

A square having side length 12 contains a quarter, semi and full circle. The centres of the latter two are connected to the square’s centre to form a green triangle. What is it’s area?

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Solution

The green area is 11.

Solution by Jane Miller.

Poem

Ball pool
A game you play with cue and balls
Playing the match you choose
And may be win or loose
Just set your goal and try a strike
You will get better and better
Ball at front
Ball in the centre
The balls are rolling
And don’t roll by chance
Thanks your skilful hands

Bella

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