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Use a formula to find the surface area of each pollyhedron de (a) a rectangular prism that is 3 feet wide, as tall as it is wide, and twice as long as it is tall (b) a regular hexagonal pyramid with a base area of 93.5 square centimeters, a base side length of 6 centimeters, and a slant height of 6 centimeters cmn Need Help? Read It You are painting a room that is 14 feet long, 12 feet wide, and 9 feet high. On the walls of the room, there are two windows that are each 2 feet wide and 4 feet tall, and a door that is 4 feet wide and 8 feet tall. A gallon of paint covers 350 square feet. How many gallons of paint do you need to cover the 4 walls with one coat of paint, not including the windows and the door? (Round your answer up to the nearest whole number.) gal Need Help? Read It