1. A prismatoid has an upper base of 90 cm^2 , a lower base of 210 cm^2 , an altitude of 100 cm, and a midsection of 120 cm^2. What is its volume?
2. Find the midsection of a frustum of a square pyramid if its lower base is 20 cm on a side, its upper base is 12 cm on a side, and the altitude of the frustum is 14 cm.