The equation for the circumference of a circle is pi times radius squared.
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The measure of an arc is part of the circumference of a circle
Measure the distance from the centre of the circle to its circumference.
You measure it. If you know the radius (of a circle), you multiply it by 2 to get the diameter. If you know the circumference of a circle, you divide by pi to get the diameter.You measure it. If you know the radius (of a circle), you multiply it by 2 to get the diameter. If you know the circumference of a circle, you divide by pi to get the diameter.You measure it. If you know the radius (of a circle), you multiply it by 2 to get the diameter. If you know the circumference of a circle, you divide by pi to get the diameter.You measure it. If you know the radius (of a circle), you multiply it by 2 to get the diameter. If you know the circumference of a circle, you divide by pi to get the diameter.
The answer will depend on what 9 yards is a measure of.
you drill a hole in it then fill it with water then pour it into a cup and measure it