Answer and Explanation
Your Answer is
Correct Answer is C
Explanation
The volume of a cylinder is the base area times the height
V = πr2h = 720π;
t = 720π ÷ 600 = 1.2π ≈ 3.8
Use the following information to answer questions 38-40.
Shown below is an inflatable display (on level ground) of a Lion's Crest Cola can. A blower pumps air into the display at an average rate of 600 cubic feet per minute as it inflates the display. When fully inflated, the display is a right circular cylinder with a diameter of 12 feet and a height of 20 feet. Also shown below is 1 of the support ropes that anchors the display. The rope is attached to the top of the display and has an angle of elevation of 55°. The volume of air in the fully inflated display is equal to the display's height times the area of 1 of the circular bases.
39. The blower starts to pump air into the completely deflated display and continues until the display is fully inflated. To the nearest 0.1 minute, for how many minutes does the blower pump air?