Math and Arithmetic
Algebra
Geometry

# What is the radius of a semi circle mean?

###### Wiki User

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.

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## Related Questions

It is the same as the radius of the whole circle.

It is half of a circle; the circle's radius (and that of the semicircle) is 10 cm.

R = Radius The radius is half the diameter of a circle.

find the circumferance as if it was a whole circle but when you get the answer divide it by 2

If you mean "what is the radius of a circle", then the answer is the line segment or length from the center of circle to the set of points that form the circle. The radius is also half of the diameter.

The radius is any point on the surface of the circle to the center of the circle.

The length (circumference) of the curved part of a semi-circle is pi times the radius (pi*R). If the diameter is given, then the semi-circle length is 1/2 (pi * x D) because the radius is 1/2 of the diameter.(There are 2pi radians in a full circle.)A closed shape formed from a semi-circle has a perimeter P = D + (pi * D / 2)(diameter plus the curved part)

The answer depends on the track. They are not all the same shape.

Area of the semi-circle = pi*19.12/2 = 573.042 square m to 3 decimal places

A part of a circle is called an arc. The defined values for a circle are: radius, diameter, chord, area, circumference, and the arcs. There is the circumfrence, semi circle, arc, diameter,chord,segment,radius,quaderent

The radius of the circle is half the diameter of the circle. 30mm radius would mean 60mm diameter or 6cm.

The radius of a circle is half of its diameter

If you mean the radius of a circle then it is half of the circle's diameter

Just the one and it is its radius when at right angles to the semi-circle's centre

Circle = pi*42 = 50.27 cm2 Semi-circle = (pi*5.52)/2 47.52 cm2 The circle has the greatest area.

radius is half of a circle. when u make a line from the middle of the circle to the edge would be the radius:]