看不懂如何解题---**Extracted Content:**
**Question 31:**
Calculate the perimeter of this sector, to the nearest centimetre.
**Mathematical Expression:**
`27/360 * π * 43 + 43 + 43`
`= 49`
**Chart/Diagram Description:**
There is an incomplete, faint drawing at the bottom of the image, possibly a geometric shape related to the problem (a sector), but it is not detailed enough to describe accurately. It shows parts of two lines meeting at a point, suggesting an angle, which would be consistent with a sector. However, no specific points, labels, or angles are clearly visible or labeled.