Calculate the area of a circle with a radius of 3cm.
| August 23, 2021 | education
The area of this figure is determined by the law: S = πr ^ 2. Thus, the area of a circle with a radius of 3 cm and an approximate value of n = 3.1 will be:
S = 3.1 * 3 ^ 2 = 3.1 * 9 = 27.9 (cm2).
Let’s round the resulting value to units:
27.9 cm2 ≈ 28 cm2.
Answer: the area bounded by this circle is 28 cm2.
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