What is the difference in area between a circle with a diameter of 3 meters and a square with a side length of 3 meters? Use 3.14 for Pi. Can someone please explain to me how to solve the question ^^

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