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Earn +20 ptsQ: What formula do you use to find the perimiter of a circle?
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What is the formula to find the perimiter?
It depends what shape you are trying to find. If it is a circle, use the following:C = DpiCircumference = Diameter x PiTake the diameter of the circle, or twice the radius, and multiply it by pi, which is ~3.14If it is any other shape, just add up the sides if they are given.
What formula do you use if you know the diameter of a circle and want to find the circumference?
circumference of a circle = pi * diameter.
How do you find the area of a circle with a radius is 3cm?
Use this formula: A = PI(r)2
What formula will you use to find the circumference of a circle whose diameter is 2.2h?
Circumference of a circle = pi*diameter or 2*pi*radius
How do you find the bottom half of a circle?
To find the area of half a circle, use the formula for a circle pi*r^2 divided by 2. pi = 3.14, r = radius (half the distance across the circle)
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