4. A beach ball is deflating at a constant rate of 10 cubic centimeters per second. When the volume of the ball is z cubic centimeters, what is the rate of the change of the surface area? | (S= 4r andV = 4ar')

Mathematics For Machine Technology
8th Edition
ISBN:9781337798310
Author:Peterson, John.
Publisher:Peterson, John.
Chapter65: Achievement Review—section Six
Section: Chapter Questions
Problem 44AR: Solve these prism and cylinder exercises. Where necessary, round the answers to 2 decimal places...
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4. A beach ball is deflating at a constant rate of 10 cubic centimeters per second. When the
volume of the ballis z cubic centimeters, what is the rate of the change of the surface area? |
(S= 4r² cond V = 4r")
5. The height of grain in a cylindrical silo is increasing at a constant rate of 4 feet per minute. At
what rate is the volume of grain in the cylinder increasing if the radius of the silo is 10 feet? (
V = rk)
6. Water is poured into a conical tank that is 24 feet tall and has a diameter at the top of 20 feet. (
v = +ar'h)
a) When the volume of the water is increasing at 3 cubic feet per minute and the height of
the water is 2 feet, at what rate is the height of the water changing?
b) The radius of the surface of the water in the tank is increasing at 0.75 feet per minute.
At what rate is the area of the surface changing when the radius is 42 feet?
Transcribed Image Text:4. A beach ball is deflating at a constant rate of 10 cubic centimeters per second. When the volume of the ballis z cubic centimeters, what is the rate of the change of the surface area? | (S= 4r² cond V = 4r") 5. The height of grain in a cylindrical silo is increasing at a constant rate of 4 feet per minute. At what rate is the volume of grain in the cylinder increasing if the radius of the silo is 10 feet? ( V = rk) 6. Water is poured into a conical tank that is 24 feet tall and has a diameter at the top of 20 feet. ( v = +ar'h) a) When the volume of the water is increasing at 3 cubic feet per minute and the height of the water is 2 feet, at what rate is the height of the water changing? b) The radius of the surface of the water in the tank is increasing at 0.75 feet per minute. At what rate is the area of the surface changing when the radius is 42 feet?
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ISBN:
9781337798310
Author:
Peterson, John.
Publisher:
Cengage Learning,