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I need help finding the area of the shaded sector!

I Need Help Finding The Area Of The Shaded Sector class=

Sagot :

The area of a sector of a circle is ½ r² ∅, where r is the radius and ∅ the angle in radians subtended by the arc at the centre of the circle. So in the below diagram, the shaded area is equal to ½ r² ∅ . We also have that

[tex]180\text{ grados = }\pi\text{ rad }[/tex]

For thus we have that the angle 260 in radians is

[tex]260\cdot\frac{\pi\text{ rad}}{180}=1.444\text{ }\pi\text{ rad}[/tex]

So the area of that sector is

[tex]\begin{gathered} A\text{ = }\frac{1}{2}(4)^2\cdot(1.444\text{ }\pi\text{ rad)} \\ =\frac{16}{2}\cdot(1.444\text{ }\pi\text{ rad)} \\ =\text{ 8 }\cdot(1.444\text{ }\pi\text{ rad)} \\ =\text{ 11.5555 }\pi\text{ rad} \end{gathered}[/tex]

The answer is 11.5555 pi rad.

The answe will be 11-5555555
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