Calculate the area of a circle if the circumference of the circle is 21.98 cm.
| June 21, 2021 | education
Decision.
If the circumference is L, then its radius is r = L / 2π;
r = 21.98 / 2 * 3.14 = 3.5 (cm)
S = πr² = 3.14 * 3.5² = 38.465 (cm²)
Answer: 38.465 cm²
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