Answer:
3.5 cubic yards of cement we need.
Step-by-step explanation:
Given : You need to order cement to make a concrete sidewalk 3 feet wide and 95 feet long. Assume that the depth of the concrete is 4 inches.
To find : How much cement is needed, in cubic feet? How many cubic yards of cement do you need?
Solution :
The length of the side walk is 95 feet long.
The width of the side walk is 3 feet long.
The depth of the concrete is 4 inches.
Convert inches into feet,
1 inch = 0.083 feet
4 inch = [tex]4\times 0.083=0.332[/tex] feet
Volume of the cement required is given by
[tex]V=l\times b\times h[/tex]
[tex]V=95\times 3\times 0.332[/tex]
[tex]V=94.62\ ft^3[/tex]
Converting volume into yards,
[tex]1\ ft^3=0.037\ yd^3[/tex]
[tex]94.62\ ft^3=3.50094\ yd^3[/tex]
Therefore, 3.5 cubic yards of cement we need.
