4. A conic reservoir filled with water has a radius of 75 cm and a height of 300 cm. The water is draining out at a rate of 6000 cm'/s. Determine at what rate is the radius of the liquid's surface changing when its depth is 100 cm. Vcone = =172 h du = 21 xy - 0.76 cmls [3] dab ...175 cm 3 h = 300 cm 100 bobo 100 75 25 300 100 5. Two cars start from the same point at the same time. One heads south at 60 km/ and the other heads west at 25 km/. Determine the rate of change of the distance between them 24 minutes later. Include a diagram with the variables being used. [3] 655 him/h Page