�PNG IHDR ��� pHYs � ��+ baSE '��� xIDATx�c`�@���c�S �*��$�i�E��?8�C�?byb5� �a�x��� �'gM�u��(9���8K��y [b�$A9���ad'�S ���< � l�2�A�� �tEXtMathML <math xmlns="http://www.w3.org/1998/Math/MathML"><mstyle mathsize="12px"><mfrac><mi mathvariant="normal">π</mi><mn>4</mn></mfrac></mstyle></math>:yCL IEND�B`�