The radius of the circle is half of the diameter, so the radius is 40cm / 2 = 20cm.
The formula for the area of a circle is A = πr^2, where A is the area and r is the radius.
Plugging in the values, we get A = 3.14 * (20cm)^2 = 3.14 * 400cm^2 = 1256cm^2.
Therefore, the area of the circle is 1256 square centimeters.
Find the area of a circle with a diameter of 40cm use 3.14
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