Question 737060
In the circle, central angle AOB measures 45 degrees the arc is AB 3.14 cm long. How many cm is the radius?
:
Find the circumference
{{{360/45}}} * 3.14 = 25.12 cm
Find the radius
{{{2*pi*r}}} = 25.12
r = {{{25.12/(2*pi)}}}
r = 3.998 ~ 4 cm is the radius