Friday

January 30, 2015

January 30, 2015

Posted by **Emily** on Tuesday, March 20, 2007 at 8:46am.

The "measure" of an arc is the angle that it subtends from the center of the circle. Call that angle A.

The length of the arc is

2 pi R * [A/(2 pi)] = R*A, if A is in radians and R is the radius of the circle, or pi R*A/180, if A is measured in degrees.

Emily think of a pizza that has been cut into 8 equal pieces, and look at one of those pieces.

The arc measure would be the angle that your piece of pizza has as its point, in this case 45º

The arc length would be the length of the curved part of your pizza slice, in this case 1/8 the circumference of the pizza

(remember C=2*pi*r)

- math -
**jevari**, Monday, November 26, 2012 at 9:47pm6.3

**Answer this Question**

**Related Questions**

math advanced functions - a) Determine the measure of the central angle that is ...

geometry - Point C is the center of the circle. The measure of angle ACB is 15x...

math - 6. Find the z-score related to the raw score, mean, and standard ...

geometry - If the arc on a particular circle has an arc length of 14 inches, and...

geometry - If the arc on a particular circle has an arc length of 14 inches, and...

geometry - If the arc on a particular circle has an arc length of 14 inches, and...

geometry - Two chords that intersect within a circle form an angle whose measure...

Math - I think this will be the last one. Find the radius of circle C if the ...

geometry - Circle O above has a circumference of 240 cm and arc XW has a length ...

Trig - Find the radian measure of the central angle of a circle of radius r that...