The green zone

A quarter circle and a right triangle inside a square. One of the vertices of the triangle is the square’s centre. What fraction of the square’s area is green?

Scroll down for a solution to this problem.


The green fraction is 1/10.

Solution by Ahmet ÇETİN.


A green zone
Can be a zone for freedom
For people and militaries
Or inhabitants who did not flee
Or better so called ecodistricts
To test sustainable strategies
With open spaces to impact fees
And recycling in multi-family
A zone with flexibility
Promised to sustainability


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