Q: Find the area of the circle shown with radius r equals 5 m?

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The area of a circle equals pi times the radius squared (A = pi*radius2) where pi is 3.1416 So the radius is the square root of the area divided by 3.1416

x2 +y2 = R2 =16 = radius 2 R = 4

The radius of a circle is half its diameter (the measure of the circle from one side across to the other).

Diameter is two times the radius, in our case the radius is 10.4 inches, Can you now find the diameter. I am sure you can, good luck!

the radius is from the center of the circle to the edge so that's how you find the radius.

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Area of a circle equals pi r2 Therefore the radius of a circle equals the square root of (area divided by pi).

Type your answer here. Find the radius for a circle with the equation x2 plus y2 equals 9? ..

Half the square root of the square radius equals the circle radius.

you cant: pi is the same for any circle - 3.1415... the diamter or the radius has to be given diameter divided by two equals the radius the radius times two equals the diameter

Area of a circle equals pi (~3.14) multiplied by the radius squared. So to find the area of that circle your equation is (3.14)(3)^2 which equals approximately 27.

The area of a circle equals pi times the radius squared (A = pi*radius2) where pi is 3.1416 So the radius is the square root of the area divided by 3.1416

If d represents the diameter, then radius = d/2 = 1.125 cm

You have to find the diameter, 12, then you have to multiply that by 3.14 or pi... which equals 37.68.

A radius is the distance from the center point of a circle to the outside. To find the radius, you'd draw a line from the center of a circle straight out until it hits the circle itself, then measure the length of the line you just drew. If you are given a diagram where only the diameter is shown (the distance from one side of the circle to the other), just take half the diameter.

x2 +y2 = R2 =16 = radius 2 R = 4

area equals pi r squared therefor r squared equals area over pi. Now find square root of r squared and you have "R" (radius) = 2.821

The circumference of a circle is calculated by multiplying the diameter of the circle by Pi. Multiply the radius by 2 to find the diameter. The diameter is 125.6. Now multiply it by Pi. (Pi equals 3.14) This makes the circumference of the circle 394.38.