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The circle must have a radius. If you do not know it then you find out the area using the diameter, (this is the length of two points directly across from each other on the circle.
The equation for the area of a circle when using the diameter =π × (d/2)²
By the way, π is approximately = 3.14159265. or 22/7
A circle with no radius has no area and is sometimes considered by certain branches of geometry and topology as a point.
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How do you find ratio of area to radius?
In a circle, the area of the circle is pi times the radius squared
Why do you find the area of a circle with pi times the radius squared?
You find the area of a circle with pi times radius squared because the radius is half the circle so to find the full area you need to multiply it again.
How to find area of a circle?
you take the radius and multiply it by itself. then you multiply the radius squared by 3.14 to get the area of a circle...
How do you find the radius and diameter of the circle if you know the area?
Area of Circle = pi (radius)2 So , using this formula we can find the radius and also the diameter. Diameter = 2(radius)
What is the required piece of information tho find the area of a circle?
The only piece of information required to find the area of a circle is the radius of the circle. Once you know the radius of the circle, the area is simply the radius squared multiplied by pi (approximately 3.14).
