In the following figure, \(HOLD\) is a rectangle with \(E\) and \(R\) are mid-points of \(HD\) and \(HO\) respectively. If \(OL\) \(=\) 14 \(cm\) and \(LD\) \(=\) 48 \(cm\), then find the length of \(ER\).
 
A27.png
 
The length of \(ER\) is: