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what is the formula for the area of a circle using diameter. A p 4 D2. If you know the area of the circle divide the result by p and find its square root to get the radius.
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The formula used to calculate circle area is. Enter the diameter of a circle. The unit of area is the square unit such as m2 cm2 etc.
Diameter of the circle 2r 2 times 8 cm 16 cm.
Then multiply by 2 to get the diameter. You can substitute the area value to find the diameter of the circle. A p x o 2 2. Area of a circle diameter.
