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What happens to the circumference of a circle when its radius is cut in half?
It splits
How many times would the sample size have to increase to cut the standard deviation by half?
Four.Four.Four.Four.
What is the radius of a 20 cm circle with a quarter cut out?
10 cm Cutting out a quarter of the circle doesn't affect the radius, which is half of the diameter.
What is a line that cuts a circle or a sphere in half called?
a bisecting line ? Diameter ______________ The question needs to be re-thought. Lines do not cut spheres in half, no matter where the line is in the sphere. The simplest thing that can cut a sphere in half would be a plane.
What is the radius of a semi circle mean?
The radius of a semi-circle is the same as the radius of the circle that was cut in half. The radius of a circle is the distance from the center of the circle to any point on the circle. That's the same as 1/2 of the diameter. It's easy to measure it on a semi-circle, because you don't even need to determine where the center is. The diameter is just the length of the flat side, and the radius is half of that.
