1. Formula for calculating the circumference in terms of the radius:
С = 2 * pi * r, where pi = 3.14., We express from this formula the radius r = С / (2 * pi).
2. Find the radius of the given circle by substituting the known values into the formula.
31.4 / (2 * 3.14) = 5 (cm) the radius of the given circle.
3. Find the radius of the circle which is 1 cm larger than the radius of this circle.
5 + 1 = 6 (cm) radius of the circle.
4. Find the area of a circle whose radius is 1 cm larger than the radius of this circle.
The area of a circle is calculated by the formula S = pi * R ^ 2, where pi = 3.14., We substitute the values of the radius in the formula.
3.14 * 6 ^ 2 = 113.04 (cm2) the area of a circle whose radius is 1 cm larger than the radius of this circle.
Answer: 113.04 cm2.
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