A circle X has a radius MX that is 11 inches. The central angle MXY measures 75 degrees. What is the length of the arc MY in inches? (write expression as a REDUCED fraction with pi. Example 2/3 pi)
Length of arc MY in inches:
2007-04-17 06:50:03 · 2 answers · asked by davidiscool@sbcglobal.net 2 in Science & Mathematics ➔ Mathematics
The length of an arc with an angle of 75 degrees is given by:
L = 2*pi*r/4.8 (divide the circumference of a circle which is 2*pi*r by 4.8 because 360/75=4.8)
You need your answer as a fraction, so change 4.8 to 48/10.
So, MY = 2*pi*11/(48/10)
MY = 2*pi*11*10/48
MY = 220*pi/48
MY = 220/48 pi
MY = 4 7/12 pi inches
2007-04-17 07:23:23 · answer #1 · answered by andymathematics 1 · 0⤊ 0⤋
L=2pi*r *75/360 inches =22*75/360 pi"
=275/36*pi
I´m supposing you are asking for the arc XY
2007-04-17 13:58:03 · answer #2 · answered by santmann2002 7 · 0⤊ 0⤋