2 The circumferences, \(c \mathrm {~cm}\), of some trees in a wood were measured. The results are summarised in the table.
| Circumference \(( c \mathrm {~cm} )\) | \(40 < c \leqslant 50\) | \(50 < c \leqslant 80\) | \(80 < c \leqslant 100\) | \(100 < c \leqslant 120\) |
| Frequency | 14 | 48 | 70 | 8 |
- On the grid, draw a cumulative frequency graph to represent the information.
\includegraphics[max width=\textwidth, alt={}, center]{9c23b94b-e573-4e13-be90-e63a0daf18e5-03_1401_1404_854_413} - Estimate the percentage of trees which have a circumference larger than 75 cm .