leave correct answers below with no explanation, make sure that you have the right answers or will vote unhelpful. thanks asap

Question 5 [1 point} '-II At noon, a plane was ll":I km south of an airport flying north at E kmr'h. A second plane at the same altitude as the first plane passes over the same airport tray'eling east at 401'.) kmfh also at noon. How fast is the distance between the two planes changing at 2:00 pm? 0 Tkafh 0 son kmfh 0 wow? kmfh 0 an kmfh It'Ztuesti-t'in 6 E1 point} '-II A propane tank is to hold a volume of 3mm3 of propane. The tank will he in the shape of a cylinder with a hemisphere on one end. The machineryr cannot manufacture a cylinder with anyr measure {including the radius} that is any smaller than 2m. The hemisphere costs three times the amount of the cylinder to manufacture. The radius will minimize the overall cost {two 2 decimal places] is: O 12.9 m 0 4.1m O Gm 0 2.56m