An arc has length =5 cm, the angle it makes at the center of the circle is 30 degrees. So what is the radius of the circle?
15 π cm
30/ π cm
35 / π cm
20 π cm
What is the length of an arc which subtends angle θ (degrees) at the center in a circle of radius r?
The radius of the circle whose arc of length 15πcm makes an angle of 3π4 radian at the centre is