Well, if the cement block is going to get painted, then you would have to find the surface area of that rectangular solid. Multiply 4.5 by 7.25 to get the area of one side, then multiply that answer by 2 to get the area of the side opposite the given side. You'd end up with the area for two congruent sides. Next, multiply 4.5 by 6.5. Multiply the sum by 2, since there is another congruent side opposite that. Lastly, multiply 6.5 and 7.25, since they are the only numbers left to multiply anyway. Multiply the product by 2. Your work should look somewhat like this: 4.5 x 7.25 = 32.625 (x2) 4.5 x 6.5 = 29.25 (x2) 6.5 x 7.25 = 47.125 (x2) 32.625 + 29.25 + 47.125 = 109 Multiply 109 by 2 (there are 6 sides to this prism; 3 are listed, so multiply 2 to get the area of the other 3) FINAL ANSWER: 218 feet squared
