Determine the rate of increase of diagonal AC of the rectangular solid, shown in Fig. 35.1, correct to 2 significant figures, if the sides x. y and z increase at 6 mm/s, 5 mm/s and 4 mm/s when these three sides are 5 cm, 4 cm and 3 cm respectively. Figure 35.1 y=4 cm x=5cm z=3cm