Question

A circle has a circumference of 12. It has an arc of length 11.

Answer 1

330°

Explanation: Given Circumference=12 units.

Arc =11units.

Angle subtended at centre=arc/radius

(this is lengthy and Involves big decimal.. So lets look at another method↓)

Again.. In a More Discrete way...

If we Divide the arc By circumference and multiply this with 360 We will get the answer.

i.e angle subtended=11×360/12=11×30=330°