Homework Help: pre-algebra

Posted by Greg on Wednesday, January 7, 2009 at 10:58pm.

You want to paint a wall that is 8 3/4 feet high and 11 1/4 feet long. You have a can of paint that will cover 200 square feet with one coat.
A. find the area of the wall.

b. if you want to apply two coats of paint , do you have enough paint? explain

pre-algebra - DrBob222, Wednesday, January 7, 2009 at 11:18pm
Area of wall is 8.75 x 11.25 = 98.4375 square feet. So 200 foot coverage should be easy to do.
Two coats = 2 x 98.475 = less than 200 so two coats can be applied.
Be careful with the number of significant digits. I am assuming these are EXACT numbers; therefore, I included all of the digits.
pre-algebra - Orian, Wednesday, January 7, 2009 at 11:19pm
(A.) Area = length*width

(B.) See if you have enough paint to cover twice that area. (The amount of paint you have should be more than twice the area of the wall.)

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