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Area of a circle formula the formula for the area of a circle is π x radius2 but the diameter of the circle is d 2 x r 2 so another way to write it is π x diameter 2 2.
Area of a circle section. It can also be found by calculating the area of the whole pie shaped sector and subtracting the area of the isosceles triangle acb. A sector has an angle of θ instead of 2 π so its area is. To find the segment area you need the area of triangle idk so you can subtract it from the area of sector idk.
This new formula is. The formula to find the area of the segment is given below. The total area of a circle is πr2.
Or when you know the circumference. The area of the sector can be obtained by multiplying the circle s area by the ratio of the angle θ expressed in radians and 2 π because the area of the sector is directly proportional to its angle and 2 π is the angle for the whole circle in radians. A c2 4π.
Circular segment circular segment is an area of a circle which is cut off from the rest of the circle by a secant chord. A π 4 d2. The area of a circle is.
This revised formula uses circumference directly without the radius to find area. Is the radius of the circle of which the segment is a part. π pi times the radius squared.
θ 2 r2. Area of sector θ 2 r 2 when θ is in radians area of sector θ π 360 r 2 when θ is in degrees. Find the area of circle segment ik.
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