The diameter of a tube is 4 centimeters. it is 40 centimeters tall. what is the volume of the tube? use 3.14 for π. a. 640 cm3 c. 138.2 cm3 b. 2009.6 cm3 d. 502.4 cm3

Titus works at a hotel. part of his job is to keep the complimentary pitcher of water at least half full and always with ice. when he starts his shift, the water level shows 4 gallons, or 128 cups of water. as the shift progresses, he records the level of the water every 10 minutes. after 2 hours, he uses a regression calculator to compute an equation for the decrease in water. his equation is w –0.414t + 129.549, where t is the number of minutes and w is the level of water. according to the equation, after about how many minutes would the water level be less than or equal to 64 cups?