An upright cylindrical tank 10 feet tall with a radius of 4 feet pumps a mystery liquid out of a spout 6 feet above the top of the tank. The tank is half full. It takes 540 foot-pounds to pump all the liquid out of the tank. How
many pounds does the liquid weigh per cubic foot?

What are the choices

The skating rink rented 872 pairs of skates during april and may.why? : if the skating rink rented three times the pair of skates in april during may, they rented 654 skates. 218 x 3 = 654then, if they want to know how many they rented during both april and may, then you just add 654 (may) and 218 (april) to give you 872 pairs of skates for both months.654 + 218 = 872hope this !