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If the circumference or diameter is given then you can find the radius or simply measure the distance from the centre of the circle to the circumference.

Q: How do you find the area of a circle without knowing the radius?

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The radius of a circle when the area is 96 is 5.528

3850m is the area of the a circle whose radius of 7meaters

The area of a circle, if the radius is 5 cm, is: 78.54 cm2

A circle with a radius of 11m has an area of ~380.13 m2

A circle with a radius of 13 units has an area of 530.93 square units.

Related questions

Since the area of a circle is pi times radius squared, take the radius and square it. Then, multiply that by 3.14, or pi to get the area of the circle.

You will have to measure some part of the circle. As long as you have absolutely no information about a circle, you can't do any calculations.

Knowing that the area of a circle is its radius squared times Pi, the area of a 10 ft radius circle is 100*Pi square ft, or about 314 square feet.

count the number of sides?

To find the circumference of a circle, you need only know the radius or diameter of the circle. The circumference of a circle is calculated as 2 x Pi x radius OR Pi x diameter. Pi is approximately 3.1415926.

Knowing the area of a circle which is pi times radius squared will help you to find other properties of the circle

The area of a circle is pi * radius2. If you already have the radius squared, you just have to multiply that by pi.

It is not. Knowing its radius or diameter will do just as well.It is not. Knowing its radius or diameter will do just as well.It is not. Knowing its radius or diameter will do just as well.It is not. Knowing its radius or diameter will do just as well.

If you know the radius (say it's 4), square the radius and multiply that number by pi. So for a radius of four, it would be 4 X 4 = 16 X 3.14 = 50.24, the area of the circle.

The area of a circle if the radius is 9m 254.5m2

The radius of a circle with the area of 36 is 3.385

The area of a circle with a radius of 14.4 is 651.4