NO WE ARENT SUBTRACTING JUST ONE QUARTER WE ARE SUBTRACTING BY A WHOLE CIRCLE AS 1/4*4=1 SO WE HAVE TO SUBTRACT THE SQUARE BY THE AREA OF ONE CIRCLE WHICH IS 12.56 SO WHEN U SUBTRACT THE AREA OF SQUARE WHICH IS 16 BY THE AREA OF THE CIRCLE WE GET THE ANSWER WHICH IS 3.44