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A circle is inscribed in a square. A point in the figure is selected at random. Find the probability that the point will be in the shaded region.


A Circle Is Inscribed In A Square A Point In The Figure Is Selected At Random Find The Probability That The Point Will Be In The Shaded Region class=

Sagot :

[tex]a-side\ length\ of\ the\ square\\r=\frac{1}{2}a-radius\ length\ of\ the\ circle\\\\A_{\fbox{}}=a^2\\\\A_O=\pi r^2=\pi\left(\frac{1}{2}a\right)^2=\frac{1}{4}\pi a^2\\\\Probability:\frac{\frac{1}{4}\pi a^2}{a^2}=\frac{1}{4}\pi\approx\frac{1}{4}\cdot3.14=0.785[/tex]