Find the central angle θ Which subtends an arc of length 61 centimeters of a circle of radius 54 centimeters.

Answer 1

circumference=2r pi so in this case circumference is 2(54)3.14 or 549.1

to find the central angel of the arc which is 61 we have to remember that there is 360 degrees in a circle.

61/549.1=x/360 and the central angle is 39.9 degrees or 40 degrees