| Exam Board | OCR MEI |
|---|---|
| Module | C2 (Core Mathematics 2) |
| Year | 2009 |
| Session | June |
| Marks | 4 |
| Paper | Download PDF ↗ |
| Mark scheme | Download PDF ↗ |
| Topic | Radians, Arc Length and Sector Area |
| Type | Arc length calculation |
| Difficulty | Easy -1.2 This is a straightforward application of the arc length formula s = rθ, requiring only direct substitution and rearrangement to find θ = s/r, followed by a routine conversion from radians to degrees. It involves minimal steps and no problem-solving beyond recalling standard formulas. |
| Spec | 1.05d Radians: arc length s=r*theta and sector area A=1/2 r^2 theta |
4 A sector of a circle of radius 18.0 cm has arc length 43.2 cm .\\
(i) Find in radians the angle of the sector.\\
(ii) Find this angle in degrees, giving your answer to the nearest degree.
\hfill \mbox{\textit{OCR MEI C2 2009 Q4 [4]}}