Find th area of a circle with a diameter of 40 cm use 314 for
π
The formula to find the area of a circle is A = πr^2, where r is the radius of the circle.
Since the diameter is 40 cm, the radius would be half of that, which is 20 cm.
Now plug in the values into the formula:
A = 3.14 x (20)^2
A = 3.14 x 400
A = 1256 sq cm
Therefore, the area of the circle with a diameter of 40 cm is 1256 square cm.