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same as for a whole circle

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16y ago

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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)


What is the radius of a 60 inch diameter circle?

The radius of a circle is half of its diameter. Therefore, if the diameter of the circle is 60 inches, the radius would be half of 60, which is 30 inches. The formula to find the radius from the diameter is: radius = diameter / 2.


How do you find the radius in a circle?

The radius of a circle is half the diameter or half the circumference divided by pi (3.1416).


What is the formula for radius?

A radius is half of the diameter of a circle, or the distance from one endpoint to the center.


How do you find the radius of a circle from the diameter?

the radius is half the diameter


What is the radius of a circle that has a 10 cm diameter?

The radius of a circle is half the length of its diameter. Therefore, if the diameter of the circle is 10 cm, the radius would be half of that, which is 5 cm. The formula to find the radius of a circle is r = d/2, where r is the radius and d is the diameter.


How do you find the circumference of a circle when you know the area?

OK, SO to find the area of a circle, you find the radius (half of the diameter), and fit it into the equation πr2=A where r equals radius and A = area. The perimeter of a circle is π multiplied by the diameter. π is ≈ 3.1415296.


How do you find the area using the diameter?

I assume that you are referring to the area of a circle. You divide the diameter in half to find the radius and then you put it into the formula.


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How do you find the center of a circle if you know the radius?

the radius is half of the diameter. and the middle of the circle is half way between this diameter.


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The general formula for the area of a circle is pi times the radius squared. The radius is half the diameter, so the area is pi times half the diameter times half the diameter again.


In the formula for the area of a circle what gets multiplied by 3.14?

The radius squared. The radius is half of the diameter