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dimaraw [331]
3 years ago
14

What is the area of a sector with radius 4 and an angle of 18°? Use 3.14 for p...

Mathematics
1 answer:
LiRa [457]3 years ago
4 0
\dfrac{18^o}{360^o}=\dfrac{1}{20}\\r=4\\\\A=\dfrac{1}{20}\cdot\pi\cdot4^2=\dfrac{1}{20}\pi\cdot16=\dfrac{16}{20}\pi=\dfrac{4}{5}\pi=0.8\pi\approx0.8\cdot3.14=2.512\\\\Answer:\boxed{A=2.512}
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