SOLUTION: A new sidewalk will be 66 feet​ wide, 160160 feet​ long, and filled to a depth of 33 inches ​(0.250.25 ​foot) with concrete. How many cubic yards of conc

Algebra ->  Square-cubic-other-roots -> SOLUTION: A new sidewalk will be 66 feet​ wide, 160160 feet​ long, and filled to a depth of 33 inches ​(0.250.25 ​foot) with concrete. How many cubic yards of conc      Log On


   

Question 1092647:
A new sidewalk will be 66 feet​ wide, 160160 feet​ long, and filled to a depth of 33 inches ​(0.250.25 ​foot) with concrete. How many cubic yards of concrete are​ needed?
Answer by ikleyn(52781) About Me  (Show Source):
You can put this solution on YOUR website!
.
Could you write/rewrite your condition correctly ?


Comment from student: A new sidewalk will be 6 ft wide, 160 ft long, and filled to a depth of 3 inches (0.25 foot) with concrete.
How many cubic yards of concrete are​ needed?


My response: O, I see great progress in your writing. Now I can read and solve it. 

The sizes of the sidewalk are: 

    the length = 160 ft = 160%2F3 yards;
    the width  =   6 ft = 6%2F3 = 2 yards;
    the depth  =   3 in = 3%2F36 = 1%2F12 yard.


Now the volume is %28160%2F3%29%2A2%2A%281%2F12%29 = 320%2F36 = 8.889 cubic yards.