Please help. Don't know how to do 5,6,7,8,9. Please make answers clear!

G Ed Paused 5. [-/1 Points] DETAILS SCALCET9 3.9.014. MY NOTES ASK YOUR TE If a snowball melts so that its surface area decreases at a rate of 4 cm?/min, find the rate (in cm/min) at which the diameter decreases when the diameter is 9 cm. (Round your answer to three decimal places.) cm/min Need Help? Read It 6. [-/1 Points] DETAILS SCALCET9 3.9.015. MY NOTES ASK YOUR TEA street light is mounted at the top of a 15-ft-tall pole. A man 6 feet tall walks away from the pole with a speed of 5 ft/s along a straight path. How fast (in ft/s) is the tip of his shadow moving when he is 45 feet from the pole? ft/s Need Help? Read It Watch it 7. [-/1 Points] DETAILS SCALCET9 3.9.017.MI. MY NOTES ASK YOUR TEACH Two cars start moving from the same point. One travels south at 32 mi/h and the other travels west at 24 mi/h. At what rate (in mi/h) is the distance between the cars increasing four hours later? mi/h Need Help? ReadIt Watch it Master It 8. [-/1 Points] DETAILS SCALCET9 3.9.029. MY NOTES ASK YOUR TEACHER Gravel is being dumped from a conveyor belt at a rate of 35 ft /min, and its coarseness is such that it forms a pile in the shape of a cone whose base diameter and height are always equal. How fast (In ft/min) is the height of the pile increasing when the pile is 13 ft high? (Round your answer to two decimal places.) fu/min Need Help? Read It Watch it 9. [-/1 Points] DETAILS SCALCET9 3.9.035. MY NOTES ASK YOUR TEACHER A ladder 10 ft long rests against a vertical wall. If the bottom of the ladder slides away from the wall at a rate of 1.1 ft/s, how fast (in rad/s) is the angle (in radians) between the ladder and the ground changing when the bottom of the ladder is 6 it from the wall? (That Is, find the angle's rate of change when the bottom of the ladder is 6 it from the wall.) Wall Ground rad/s Need Help? Read It