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Earn +20 ptsQ: Formula for finding area of circle?
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Continue Learning about Geometry
What is the formula for finding an area of a circle?
The area of a circle with a known radius can calculated using the following formula where r is the radius : A = Pi(r)2
What is the formula for finding the area of a semi-circle in terms of pi?
semi means half A semi-circle is half a circle The formula for the area of a circle is A = (Π * r^2) Area of semi circle = (Π * r^2) ÷ 2
What is pr2?
It is the formula for finding the area of a circle which means: pi times radius squared
What does the formula Pi r2 mean?
It is the formula used in finding the area of a circle which is pi times radius squared
What is the mathematical formula for finding the radius of a circle?
To calculate this you will need the diameter of the circle. The formula is: diameter/2*pi If you don't know the diameter you can also use the area of the circle: Sqrt(Area/pi) = radius
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