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Alex needs to varnish the top and the bottom of a dozen rectangular boards. The boards are 8 feet long and 3 feet wide. Each pint of varnish covers 125 square feet and costs $3.50.
a. What is the total area that Alex needs to varnish?
b. How much will it cost Alex to varnish all the boards?

 Mar 31, 2020
 #1
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a)  Since he needs  to  varnish  both  sides the total area to be  varnished  is

 

      2* 12  * 8  *  3    =     24 * 24  =    576 ft^2

 

b)   Cost  =    area to be varnished  /  125   *  3.50      =    (576/125)  * 3.50  ≈  $16.13

 

 

cool cool cool

 Mar 31, 2020

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