64 m. x 36 m. If the area of a rectangular chord with dimensions equals the area of a square chin, then the square Side of the chin (in m)
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Area of rectangle=640m
2
l×b=640 ,length = x
x×b=640−−−− (i)
Perimeter = 104
2(x+b)=104
x+b=52
b
640
+b=52 by (i)
640+b
2
=52b
b
2
−52b+640=0
b
2
−32b−20b+640=0
b(b−32)−20(b−32)=0
(b−32)(b−20)=0
b=32,20
x=20,32
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