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14-08-2018
Mathematics

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Please help find the answer for a,b and c please

Please help find the answer for ab and c please class=

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14-08-2018

[tex] a.\\\boxed{P=2x+2\pi r}\\\\b.\\2x+2\pi r=P\ \ \ |-2\pi r\\\\2x=P-2\pi r\ \ \ |:2\\\\\boxed{x=\dfrac{P}{2}-\pi r}\\\\c.\\P=660\ ft,\ r=50\ ft\\\\x=\dfrac{660}{2}-50\pi=(330-50\pi)\ ft\approx330-50\cdot3.14=330-157=\boxed{173\ ft} [/tex]

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