Mathematics, 25.06.2019 21:30 linshweyioo9931
What is the area of the partial circle with a radius of 8 cm? use 3.14 for pi. 37.68 cm² 50.24 cm² 150.72 cm² 200.96 cm²
Answers: 1
![\bf \textit{area of a circle}\\\\ A=\pi r^2~~ \begin{cases} r=radius\\[-0.5em] \hrulefill\\ r=8 \end{cases}\implies A=\pi 8^2\implies A=64\pi \\\\\\ \stackrel{whole}{\cfrac{4}{4}}-\stackrel{one~quarter}{\cfrac{1}{4}}=\cfrac{3}{4}~\hfill \cfrac{3}{4}\cdot 64\pi \implies 48\pi \implies \stackrel{\pi =3.14}{150.72} \\\\\\ ~\hspace{34em}](/tpl/images/0017/0921/388e5.png)
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What is the area of the partial circle with a radius of 8 cm? use 3.14 for pi. 37.68 cm² 50.24 cm²...
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