The lengths of 35 leaves of a plant are measured correct to the nearest millimetre, and the data obtained is represented in the following table :
| Length (in mm) | Number of leaves |
| \(118-126\) | 3 |
| \(127-135\) | 4 |
| \(136-144\) | 9 |
| \(145-153\) | 10 |
| \(154-162\) | 5 |
| \(163-171\) | 3 |
| \(172-180\) | 1 |
Find the median length of the leaves.
Median \(=\) ____________ mm.
(Hint : The data needs to be converted to continuous classes for finding the median, since the formula assumes continuous classes. The classes then change to \(117.5 - 126.5\), \(126.5 - 135.5\), . . ., \(171.5 - 180.5\).)