the circumference of a circle is the length around the outer edge. and you find it by using the formula 2 times pi times the radius of the circle
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circumference of a circle = pi*diameter or 2*pi*radius
all you do is find the area of the circle... if you mean find the squares area, find the area of the circle, and then the square's area and subtract the squares area to the circles area
You find the area of the whole square first. Then you find the area of the circle inside of it And then subtract the area of the circle from the area of the square and then you get the shaded area of the square
To find the circumference of a circle then multiply pi (3.14159265...) by the diameter of the circle. To find the area then multiply pi by the radius squared.
You find the area of the entire circle (pi x radius^2), and then multiply it by 1/4 or 0.25.