Kevin plans to put concrete on a rectangular portion of his driveway. The portion is 10 feet long and 3 inches high. The price o
f concrete is $98 per cubic yard. The total cost of the concrete Kevin needs is $72.59. Which of the following is closest to the width of the portion of the driveway on which Kevin plans to put concrete? [1 foot = 12 inches; 1 yard = 3 feet]
We are given with the price of concrete which is $98 per cubic yard. The budget is $72.59. Hence the cubic yards that can be created is 72.59/98 equal to 0.74 cubic yards. The dimensions are <span> 10 feet long and 3 inches high. 0.74 yards is equal to 20 cubic feet. 3 inches is equal to 0.25 feet. Hence the width is 20/10/0.25 or equal to 8 feet.</span>
The main formula of a suface area of a cube is as follow: A = 6x a², where a is the edge length if a= 1.5, so A= 1.5² x 6= 13.5 so the answer is A= <span>13.5</span>
The answer would be 2.45 acres. If you add 2.4 and 2.5, you get 4.9. If you divide 4.9 by 2, you get 2.45, which is how you determine what the halfway point is between two numbers.
