The circumference of a circle is 20π m. What is the area, in square meters? Express your answer in terms of π.
The circumference of a circle is 20π m. What is the area, in square meters? Express your answer in terms of π
1 Answer
Verified archiveTo find the area of the circle given its circumference, we can use the following steps:
1. Understanding the formula for circumference: The circumference (C) of a circle is given by the formula:
[
C = 2pi r
]
where (r) is the radius.
2. Setting up the equation: According to the problem, the circumference is (20pi) m. We can set the equation:
[
2pi r = 20pi
]
3. Solving for the radius: We can simplify this equation. Dividing both sides by (2pi):
[
r = frac{20pi}{2pi} = 10 text{ m}
]
4. Using the radius to find the area: The area (A) of a circle is given by the formula:
[
A = pi r^2
]
Substituting the radius we found:
[
A = pi (10)^2 = pi times 100 = 100pi
]
Therefore, the area of the circle is (100pi) square meters. Keep up the great work! If you have more questions, feel free to ask!