Find the circumference and area of a circle with a radius of 3.3 cm.
| February 24, 2021 | education
We know the value of the number π = 3.14, as well as the radius of the circle R = 3.3 cm.
In order to determine the circumference and area of a circle, let’s recall the formulas for finding them.
To find the circumference of a circle, we will use the following formula.
l = 2пR, where R is the radius of the circle, and we remembered the value of pi earlier.
Substitute and calculate:
l = 2 * 3.14 * 3.3 = 6.6 * 3.14 = 20.724 = 20.7 cm.
In order to find the area of a circle, we will use:
S = nR ^ 2, where R is the radius of the circle.
S = 3.14 * 3.3 ^ 2 = 3.14 * 10.89 = 34.1946 = 34.2 cm2.
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