First we have to find the radius:
pi*radius2 = 400*pi square meters
Divide both sides by pi and then square root both sides:
radius = 20 meters
2*pi*radius or pi*diameter = circumference
2*pi*20 = 40*pi meters
The circumference is 3.544 meters.
The area of a circle when the circumference is 10 inches is: 7.96 square inches.
Circumference of a circle = 2*pi*radius or diameter*pi Area of a circle = pi*radius squared
To find the diameter of a circle, you will either need to know the area or its circumference. If you know the area: diameter = 2 x squareroot(area / Pi) If you know the circumference diameter = circumference / Pi
The process you would use to find the circumference of a circle completely depends on what information you already have about the circle. For example, you might be given the circle's area, or its radius, or its diameter, or the length of one radian of arc along the circumference, and each of those would require a different method to find the circumference. The easiest example is the one where you know the circle's diameter. In that case, simply multiply the diameter by (pi) to get the circumference. The next easiest case is the one where you have the circle's radius ... let's say the radius is 1.5 meters. Knowing that the radius is half of the diameter, you first double the radius, and find that the diameter 3.0 meters. Then you get the circumference just as you did in the first example ... multiply the diameter by (pi). With a radius of 1.5 meter, you would find that the circumference is about 9.425 meters. (rounded)
Circumference : 94.2 meters Area : 706.5 square meters
The area of a circle with a circumference of 1,000 meters is: 79,600 square meters.
The circumference is 18.76 meters.
The circumference is 3.544 meters.
The area is 51.847 m2
The area is 113 m2
The circumference of a circle with an area of 1800 m2 is 150.397 meters.
Circumference = 18.85 metres Area = 28.27 square metres.
The circumference is: 32.1
The area of a circle when the circumference is 10 inches is: 7.96 square inches.
The formula to find the circumference of a circle is C = 2πr, where r is the radius of the circle. To find the circumference, you first need to find the radius by using the formula for the area of a circle (A = πr^2). Given that the area is 201.06, you can solve for the radius. Once you have the radius, you can plug it into the formula C = 2πr to find the circumference.
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