Find the radius of the circle whose area is 400 mm ^ 2.

univerkov | September 18, 2021 | education

As you know, the area of a circle is calculated by the formula: S = n * R².
The number pi, rounded to the nearest hundredth, is 3.14.
Substitute the given values into the formula and calculate the radius of the circle: 400 = 3.14 * R².
R = √400 / 3.14 = √127.4 = 11.3 mm.
Answer: The radius of the circle is 11.3 mm.

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