SOLUTION: 5. A concrete driveway measures 14 yards by 5 yards. The driveway will be 0.75 yards thick. (a) How many cubic yards of concrete will be needed? (b) How much will it cost if concre

Algebra ->  Human-and-algebraic-language -> SOLUTION: 5. A concrete driveway measures 14 yards by 5 yards. The driveway will be 0.75 yards thick. (a) How many cubic yards of concrete will be needed? (b) How much will it cost if concre      Log On


   

Question 170272: 5. A concrete driveway measures 14 yards by 5 yards. The driveway will be 0.75 yards thick. (a) How many cubic yards of concrete will be needed? (b) How much will it cost if concrete is $4.75 per cubic yard?
Answer by Earlsdon(6294) About Me  (Show Source):
You can put this solution on YOUR website!
Ok, you'll need to find the volume of the concrete required for this job.
Recall:
V+=+L%2AW%2AD where L = length, W = width, and D = depth, so...
V+=+%2814%29%285%29%280.75%29
V+=+52.5Cu.yds
If each cubic yard of concrete costs $4.75, the 52.5 cubic yards will cost 52.5 times $4.75
C+=+%2852.5%29%284.75%29
C+=+249.375 Since we are dealing with dollars, we round up the nearest hundreth to get:
C = $249.38