Radian measure, arc length and sector areaAQA A-Level Maths: Mind map

Exam questions on Radian measure, arc length and sector area

1. A sector $OAB$ has centre $O$, radius $5$ cm and $A\hat{O}B=1.2$ radians.
   Convert $1.2$ radians to degrees, giving your answer to 1 decimal place.2 marks
2. A sector of a circle has arc length $8$ cm and area $24$ cm$^2$.
   Find the perimeter of the sector.2 marks
3. A circle has centre $O$ and radius $10$ cm. The chord $AB$ subtends an angle of $\frac{\pi}{3}$ radians at $O$. The minor segment is the region between the chord $AB$ and the minor arc $AB$.
   Find the exact perimeter of the minor segment.3 marks