15-02-2017
Mathematics

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How long is a wire reaching from the top of a 12-foot pole to a point 6 feet from the base of the pole

How long is a wire reaching from the top of a 12foot pole to a point 6 feet from the base of the pole class=

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15-02-2017

a*2 + b*2= c*2
(8)82 + b*2= (12)*2
64+ b*2 = 144
64-64 + b*2 = 14
4 - 64
b*2 = 80
sqr(b*2)= sqr(80)
b= (80)
b= sqr(16X5)
b=sqr (16)X sqr(5)
b= 4sqr (5)
Where sqr means square root

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