An above ground pool in the shape of a cylinder has a diameter of 18 feet and a height of 4.5 feet. if the pool is filled with water to 6 inches from the top of the pool, what is the volume, to the nearest cubic foot, of water in the pool?

Expresa commuter train leaves downtown sation and travels at a average speed of 55 miles per hour towards the north side sation, which is 50miles away. thirty minutes later, express commuter train #7 leaves north side and travels at a average speed of 35miles per hour towards downtown sation. at the moment the two trains pass each other, how far(in miles) is train #12 from the downtown sation and how long(in minutes) has the #12 train been traveling