| Exam Board | OCR MEI |
|---|---|
| Module | C2 (Core Mathematics 2) |
| Year | 2015 |
| Session | June |
| Marks | 4 |
| Paper | Download PDF ↗ |
| Mark scheme | Download PDF ↗ |
| Topic | Radians, Arc Length and Sector Area |
| Type | Sector perimeter calculation |
| Difficulty | Moderate -0.5 This is a straightforward application of standard sector formulas requiring two steps: use area formula to find radius, then calculate perimeter using arc length formula. The calculations are routine with no conceptual difficulty beyond knowing the formulas A = ½r²θ and s = rθ. |
| Spec | 1.05d Radians: arc length s=r*theta and sector area A=1/2 r^2 theta |
I appreciate you providing this content, but what you've shared appears to be just a single line of data (Question 4 with values 1.45, 4, and –0.85) rather than a complete mark scheme with marking annotations (M1, A1, B1, DM1, etc).
A mark scheme typically includes:
- Marking points with annotations (M1, A1, etc.)
- Solution steps or expected answers
- Guidance notes
Could you please provide the full mark scheme content for Question 4? Once you do, I'll clean it up according to your specifications.4 A sector of a circle has angle 1.5 radians and area $27 \mathrm {~cm} ^ { 2 }$. Find the perimeter of the sector.
\hfill \mbox{\textit{OCR MEI C2 2015 Q4 [4]}}