long sides are 24ft and short sides are 9ft.
Area = width x lenth
216 = 24 x 9
Dimensions 24+24+9+9 = 66
2006-11-28 13:42:22
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answer #1
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answered by go_uva 3
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First, you need the formula for perimeter of a rectangle:
2L + 2W = 66, where the perimeter is the sum of the 4 sides, L is the length and W is the width.
Then the area of the rectangle is L x W = 216.
Now you have two equations with two unknowns.
Us substitution for the area using the perimeter:
2L = 66 - 2W, so L = 33 - W
Therefore, L x W = (33 - W) x W = 33W - W^2 = 216.
This looks like a quadratic equation,
let's put in the form ax^2 + bx + c = 0
W^2 -33W + 216 = 0
Find two numbers whose sum is -33 and whose product is 216, should be two negative numbers, you'll get -9 and -24:
(W - 9)(W - 24) = 0, possible widths are 9 and 24.
But note 2x9 + 2x24 = 18 + 48 = 66.
9 and 24.
2006-11-28 21:53:51
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answer #2
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answered by Action 4
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the rectangle is 9 by 24
9+9+24+24=66 and 9x24=216
2006-11-28 21:45:46
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answer #3
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answered by Anonymous
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let a and b be the two dimensions of the rectangle
a + b = 66/2 = 33
a*b = 216
so a and b are the two roots of this equation : X^2 - 33X + 216 = 0
solve the equation we have x1= 24, x2=9
2006-11-28 21:41:34
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answer #4
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answered by James Chan 4
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24 x 9
Take half the circumference (33') and try things like 25 x 8, 24 x 9, 23 x 10 with the sum of the two number you try adding up to in this case 33
2006-11-28 21:43:27
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answer #5
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answered by Anonymous
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let x = length , y = wide
2x + 2y = 66 perimeter
xy = 216 area
then use system equation to solve for x and y.
2006-11-28 21:44:33
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answer #6
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answered by Luu 1
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2x + 2y = 66
xy=216
graph then find (x,y) where they intercept
You get two points of intersection, (9,24) and (24,9)
so dimensions are 9 x 24
2006-11-28 21:47:42
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answer #7
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answered by Mason 2
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multiply 66 and 216 together....... pretty sure
2006-11-28 21:39:13
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answer #8
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answered by Kaci Loves John 2
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No Idea!Sry!
2006-11-28 21:38:52
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answer #9
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answered by rena 2
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