Mathematics: If the central angle theta=2pi/3 and the radius 1.4 find the area of the sector

If the central angle theta=2pi/3 and the radius

Ответ:

baileyportillo

16.03.2022

$\bf \textit{area of a sector of a circle}\\\\
A=\cfrac{\theta r^2}{2}\quad 
\begin{cases}
r=radius\\
\theta =angle~in\\
\qquad radians\\
------\\
r=1.4\\
\theta = \frac{2\pi }{3}
\end{cases}\implies A=\cfrac{\frac{2\pi }{3}\cdot 1.4^2}{2}
\\\\\\
A=\cfrac{\frac{2\cdot 1.4^2\cdot \pi }{3}}{\frac{2}{1}}\implies A=\cfrac{2\cdot 1.4^2\cdot \pi }{3}\cdot \cfrac{1}{2}\implies A=\cfrac{1.96\pi }{3}$

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Ответ:

vanessasmith47

14.01.2020

Mathematics

x=7

Step-by-step explanation:

-3(x-1)+8(x-3)=6x+7-5x

-3x+3+8x-24=6x+7-5x

5x-21=x+7

4x=28

x=7

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If the central angle theta=2pi/3 and the radius 1.4 find the area of the sector

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