The circumference is 15.7 cm. Calculate the area of the circle bounded by this circle n = 3.14.

Determine the radius of the indicated circle, knowing that the length of a circle, by definition, is equal to twice the product of the mathematical constant π by the radius of the circle:
15.7: (2 * 3.14) = 2.5.
Let us determine how many square centimeters the area of a circle, which is bounded by the indicated circle, is equal to, knowing that the area is equal to the product of the mathematical constant π by the square of the radius of the circle:
3.14 * 2.5 ^ 2 = 19.625.
Answer: The area of a circle, which is limited by a circle, is 19.625 cm2.