Concrete delivered to a construction site costs $250 a cubic yard. What is the cost of the concrete needed to build a 6-inch-thick patio slab 20 feet by 10 feet?
Additional information:
The volume of a rectangular slab is the product of its three dimensions. The 6 inches thickness of the slab is 1/2 foot thick
Preliminary calculations
Compute the volume in cu ft for the entire job 20 (ft) * 10 (ft) * 1/2 (ft) = 100 (cu ft) Since this is the entire job
100 (cu ft /job)
Note: An alternative approach would be to include the volume calculation in
the equation below. However, doing it as a preliminary calculation seems more straight forward.
Let x equal what you are trying to find
x = ($ / job) Note: Made up unit "job" form above.
Reciprocal Factors
250 ($ / cu yd) 1 / 250 (cu yd / $)
27 (cu ft / cu yd) 1 / 27 (cu yd / cu ft)
Build an equation
x ($ / job) = 250 ($/cu yd) * 1 / 27 (cu yd / cu ft) * 100 (cu ft / job)
Multiply factors
x ($ / job) = 925.93 ($ / job)
Cost of concrete is $925.93.
You might also like to view...
A(n) ________ is a document with an .xsd extension that defines the elements, entities, and content allowed in the document
Fill in the blank(s) with correct word
Identify the letter of the choice that best matches the phrase or definition.
A. To duplicate selected information and place it on the Clipboard B. To take a copy of information that is on the Clipboard and insert it at a specified location C. To bring data into Project 2010 D. To send data out of Project 2010 into another format E. To copy data from one file to another so that only one physical copy of the data exists in the original source file F. To copy or insert data from one application file into a different application file G. Used to define how data will be imported and exported H. A group of cells in Excel I. A private network designed for a specific group of people J. Format in which the Copy Picture feature saves a file K. Uses budget values for each task to calculate variance values L. The planned cost of a task between the task's Start date and the project Status date
A style rule has two parts: a selector and a value.
Answer the following statement true (T) or false (F)
You can select a table with the Selection tool, but you cannot change its contents with the Selection tool.
Answer the following statement true (T) or false (F)