Find number of deg. subtendedat the center of a circle by an arc whose length is 357 times the radius,taking pi = 3.1416...
The Attempt at a Solution
The arc length is... 357(r)
The radius length is r
One revolution = 2r(pi) = arc lenght.
Now I will solve...
2r(pi)x = 357(r)
x = 357/2(pi)
(360 deg = 2r(pi))(357/2(pi))
357(r) = 20454.5 deg.
In the back of the book it says...20.4545
As you can see I am off a couple decimals... what happend?