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November 19th, 2018, 10:12 AM   #1
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Smile two questions involving geometry and algebra

Please help with some high school geometry questions guys. thanks.
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November 19th, 2018, 11:31 AM   #2
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Please help with some high school geometry questions guys. thanks.
I Would be really grateful guys thanks
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November 19th, 2018, 12:56 PM   #3
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As i see the rectangle is a square and there are five parts of $\displaystyle x$
Write $\displaystyle 5x=10$ and $\displaystyle x=2$




Area of circle equals $\displaystyle \pi r^2$ and area of rectangle equals $\displaystyle 24r^2$
Wasted area of metal equals $\displaystyle 24r^2 - 4\pi r^2$
$\displaystyle 24r^2 P=24r^2 - 4\pi r^2$ where P is the percentage
$\displaystyle P=\frac{1144}{24} \%$
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November 19th, 2018, 06:03 PM   #4
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$\displaystyle \frac{5x}{10}=\frac{10}{x}$

$\displaystyle P_w=\frac{24r^2-4\pi r^2}{100}$
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