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Kipish [7]
3 years ago
9

The perimeter of a rectangle is 132 feet and its area is 1080 square feet. find the dimensions

Mathematics
1 answer:
FrozenT [24]3 years ago
5 0
2x + 2y=132

xy=1080

Let x=1080/y

2160/y + 2y=132
2y^2 - 132y +2160=0
2(y^2-66y+1080)=0
2(y-30)(y-33)=0
y=30 or y=33
(36,30) or (30,36)

So... x=30,36 and y=36,30. Either way, the answer is 30 by 36 or 36 by 30. 
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0.141

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Step-by-step explanation:

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Evaluate the expression when p = 4. p^2+5 no links pls ​
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Suppose you are covering your desk (shape below) with paper and want to know how many square inches of paper you need.
zavuch27 [327]

Answer:

a. Divide the figure into two rectangles, find the area of each rectangle and add them (See the picture attached).

b. 279\ in^2

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Step-by-step explanation:

a. Divide the figure into two rectangles (See the picture attached), then find the area of each rectangle and finally, add the areas calculated in order to get the total area of the given figure,

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A=lw

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You can identify that:

l_A=19\ in\\\\w_A=11\ in

Then, its area is:

A_A=(19\ in)(11\ in)=209\ in^2

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l_B=10\ in\\\\w_B=18\ in-11\ in=7\ in

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A_B=(10\ in)(7\ in)=70\ in^2

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3 0
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