A playground in the shape of a polygon, \(PQRST\), is made up of different sections as shown in the figure. Find the area of the playground, if \(PS =\) 20.2 \(cm\), \(PO =\)12 \(cm\), \(PN =\) 7.5 \(cm\), and \(PM =\) 4 \(cm\).
[Note: Round off the answer obtained to the nearest whole number]