Find the arc length equal to 0.4 of the circumference of a circle with a radius of 2.5 cm.
| April 9, 2021 | education
Given:
The arc length is 0.4 times the circumference.
The radius of the said circle is 2.5 centimeters.
The number n is 3.14.
It is necessary to calculate the circumference by the formula P = 2 * n * r, where r is the radius of this circle.
Let’s substitute the values into the formula:
P = 2 * n * r = 2 * 3.14 * 2.5 = 15.7 centimeters.
Now you can find the length of the arc, let’s denote it P2:
P2 = 0.4 * 15.7 = 6.28 centimeters.
Answer: The length of the arc will be 6.28 centimeters.
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