Pls answer for the question c

Pls answer for the question c In a circle of radius 5 cm, PQ and RS are two parallel chords of length 8 cm and 6 cm respectively. Calculate the distance between the chords if they are on the opposite side of the centre. 3 c) The cost of manufacturing x articles is (20+2x) and the selling price of x articles is (2.5x). On a graph sheet, with the same axes and taking suitable scales draw two graphs, first for the cost of manufacturing against number of articles and the second for the selling price against number of articles. Use your graph to determine number of articles to be manufactured and sold to break even (no profit and no loss). 4