Calculate the area of a circle with a diameter of 18 M give an exact answer
The formula to calculate the area of a circle is A = πr^2, where r is the radius of the circle. Since the diameter is given, we first need to find the radius by dividing the diameter by 2.
So, radius (r) = 18 / 2 = 9 meters
Now, we can plug in the radius into the formula:
A = π * 9^2
A = π * 81
A = 81π
So, the exact area of the circle with a diameter of 18 meters is 81π square meters.