A tepee is designed to have a diameter of 10 ft and a volume of 393 ft3. At what height, h, should the support poles cross to assemble the tepee
correctly? Use 3.14 for TT, and round your answer to the nearest foot
( someone help)

You just purchased two coins at a price of $670 each. because one of the coins is more collectible, you believe that its value will increase at a rate of 7.1 percent per year, while you believe the second coin will only increase at 6.5 percent per year. if you are correct, how much more will the first coin be worth in 15 years?