murphy is building a home with four front windows, each in the form of a parallelogram. if each window has a five ft base and aheight of 2ft. how many sqaure ft of the 25ft *11ft wall will require stain. the second part of the questio is if the stain used on the wall in exercise 47 is applied at a cost of 2.75 per sq yrd, find the cost of staining the front wall
Area of a parallelogram is base times height. So each parallelogram has an area of 5 * 2 = 10ft^2. There are 4 windows so if each one takes up 10 ft^2 then those 4 windows would take up 40ft^2. The wall is 25 * 11 which is 275 ft^2. So if you take away the window space 40 Ft^2, you are left with 235 ft^2 of wall to stain.
There are 9 ft^2 in 1 yd^2 so if you have 235 ft^2 then you have 235/9 yd^2 26yd^2 with 1ft^2 left over. 2.75 * 26 = $71.50 you have 1 ft^2 left over so you will have to buy one more can of stain at 2.75. $71.50 + $2.75 = $74.25
thanks
if concrete weighs 160lbs per cubic ft, what is the weight of a concrete circular slab 4in thick and 15 ft across
x^8/x^2
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