Find the area of a circle if 2/3 of the circumference of this circle is 24.8 cm.
| December 13, 2020 | education
The formula for the area of a circle is -nR ^ 2, where R is the radius
We find the radius through the circumference: Lokr = 2пR,
L can be found by dividing 24.8 by 2/3 = 37.2
R = L / 2п = 37.2 / 3.1 * 2 = 6
Then the area S = nR ^ 2 = 3.1 * 6 ^ 2 = 3.1 * 36 = 111.6 cm square
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