Please help with questions 34-36

34) Mr. Jackson wants a concrete patio at the bottom of the stairs to his deck. He would like the concrete to be 4 inches thick and the patio dimensions to be 10 feet by 12 feet. How mar cubic feet of concrete will he need for the patio? Hint: the patio is a rectangular prism A) 480ft3 B) 40ft3 C) 69,120ft3 D) 100ft3 35) How many total cubic feet of concrete is needed for the deck posts and the patio combined? A) 505.12ft3 B) 1,686.40ft3 C) 3,719.04ft3 D) 65.12ft3 36) Each 80 pound bag of concrete the Jacksons will use contain 0.75 cubic feet of concrete. Based on the answer to the previous question, what is the minimum number of bags of concrete needed for the posts and the patio? A) 674 B) 87 C) 2,249 D) 4,959