How do you find the area when given the circumference?

How do you find the area when given the circumference?

How to find the area of a circle from the circumference?

1. Divide the circumference by π.
2. Divide the result by 2 to get the circle’s radius.
3. Multiply the radius by itself to get its square.
4. Multiply the square by π, or 3.14 for an estimation.
5. You found the circle’s area from the circumference.

What is the area of a 15ft circle?

approximately 706.5 square feet
The area of the circle is approximately 706.5 square feet.

What is the difference between area and circumference of a circle?

Circumference of circle: The distance around the circular region is called its circumference. The ratio of circumference of any circle to its diameter is constant. Area of circle: The measure of the region enclosed inside the circle is called its area.

What is pi r?

In geometry, the area enclosed by a circle of radius r is πr2. Here the Greek letter π represents the constant ratio of the circumference of any circle to its diameter, approximately equal to 3.1416.

What’s the circumference of a 15 foot circle?

15 in x 3.14 = 47.1 in .

How many square feet is a 15ft round pool?

Measure the width. Multiply the length by the width of the pool to find the square footage. For instance, 15 feet (length) times 12 feet (width) equals 180 square feet.

How do you find the area and circumference of a circle?

To find the circumference, you double the radius and multiply by pi. To find the area, you square the radius and multiply by pi.

How do I figure the circumference of a circle?

The perimeter or circumference of the circle can be found using the equation C=2π(r), where r= the radius of the circle. Since we have two semi-circles we can find the circumference of one whole circle with a radius of 4, which would be 8π.

Is the circumference the area of a circle?

The length of a straight-sided shape’s outline is called its perimeter, and the length of a circle’s outline is called its circumference. Area. This is the total amount of space inside a shape’s outline.

How to find the area of a circle from the circumference?

To find the area of a circle from the circumference, follow these steps: 1 Divide the circumference by π. 2 Divide the result by 2 to get the circle’s radius. 3 Multiply the radius by itself to get its square. 4 Multiply the square by π, or 3.14 for an estimation. 5 You found the circle’s area from the circumference.

How do you find the circumference of a circle using PI?

Given the radius or diameter and pi you can calculate the circumference. The diameter is the distance from one side of the circle to the other at its widest points. The diameter will always pass through the center of the circle. The radius is half of this distance.

What is the radius of the circle whose diameter is 8cm?

Since the diameter is known to us, we can calculate the radius of the circle, Therefore, Circumference of the Circle = 2 x 3.14 x 2 = 12.56 cm. Question 2: Find the radius of the circle having C = 50 cm. Therefore, the radius of the circle is 25/π cm. Calculate the perimeter of a circle whose diameter is 8 cm.

How to calculate diameter in terms of circumference?

How to Calculate Diameter from Circumference? The formula for circumference = diameter × π Or, diameter = circumference/π So, the diameter of the circle in terms of circumference will be equal to the ratio of the circumference of the circle and pi.