Q: How do you find a radius of a circle 120 degrees?

Write your answer...

Submit

Still have questions?

Continue Learning about Math & Arithmetic

The radius of a circle has no bearing on the angular measure of the arc: the radius can have any positive value.

Construct a circle with a 4.5 radius. The circle's circumference is 360 degrees. So mark out 3 by 120 degrees on the circumference and join them to the centre of the circle which will divide the circle into three equal parts.

360 degrees in a circle 120 degrees = 12mm 360 degrees = 36mm Therefore the circumference of the circle is 36mm.

360 ÷ 3 = 120 degrees Therefore the circle (360 degrees) has been split into 3 parts of 120 degrees each.

3.34 units

Related questions

The radius of a circle has no bearing on the angular measure of the arc: the radius can have any positive value.

There are 360 degrees in a circle so it will be 1/3 of pi*62 square units

The area of a sector in a circle if the radius is 4 cm and the arc has degree 120 is: 16.76 cm2

The 3rd arc of the circle: 360-120-130 = 110 degrees

Since diameter is twice its radius, the radius of this circle would be 60

An arc length of 120 degrees is 1/3 of the circumference of a circle

Construct a circle with a 4.5 radius. The circle's circumference is 360 degrees. So mark out 3 by 120 degrees on the circumference and join them to the centre of the circle which will divide the circle into three equal parts.

120 degrees is 1/3 of a whole circle. So sector of 66.99 is 1/3 of the whole circumference ie circumference = 66.99*3 Then 2*pi*r = 66.99*3 so that r = 66.99*3/(2*pi) = 31.985

It depends on the shape that is removed. It could be a smaller circle, whose radius is sqrt(2/3) = 0.8165 of the original radius, Or a circle with a hole with radius sqrt(1/3) = 0.5774 of the original radius cut out of it, Or a wedge making a central angle of 120 degrees removed from the circle, Or more complicated shapes.

120 degrees is 1/3 of a circle.

360 degrees in a circle 120 degrees = 12mm 360 degrees = 36mm Therefore the circumference of the circle is 36mm.

120 degrees is 33 and 1/3 percent of a circle.