To solve the problem, get first the area of the circle and the square - Circle -> Area = pi * r^2; r= radius = 3.14 * 1.5^2m^2 (radius is 1/2 of diameter) = 3.14 * 2.25m^2 = 7.065m^2 or 7.07m^2 when rounded-off Square -> Area = a^2; a = side = 3^2m^2 = 9m^2 You can now perform the subtraction process - 9.00m^2 - 7.07m^2 = 1.93m^2 Therefore, 1.93m^2 is the difference between the area of circle and square