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math area of a circle. Area of a circle diameter. Learn how to use this formula to find the area of a circle when given the diameter.
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A p 4 D2. The number of square units it takes to fill a segment of a circle Try this Drag one of the orange dots that define the endpoints of the segment. See more area of circles videos at Brightstorm.
Area of a circle is the region occupied by the circle in a two-dimensional plane.
Note the number of square units it takes to fill it. The area of a circle is p times the radius squared which is written. Area and perimeter help us measure the size of 2D shapes. Since p is constant we need only the radius value from the user to calculate the area.
