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Sophie [7]
3 years ago
10

Find the area of the blue sector. Use 3.14 for pi and round to the nearest hundredth.

Mathematics
2 answers:
Over [174]3 years ago
5 0
\bf \textit{area of a sector of a circle}\\\\
A=\cfrac{\theta\pi r^2}{360}\qquad 
\begin{cases}
\theta=\textit{angle in degrees}\\
r=radius
\end{cases}

notice your picture, you have both, so, just plug them in
jeka943 years ago
3 0

Answer:

Option C 25.64\ in^{2}

Step-by-step explanation:

we know that

The area of a circle is equal to

A=\pi r^{2}

we have

r=7\ in

substitute

A=\pi(7)^{2}=49\pi\ in^{2}

Remember that

360 degrees subtends the complete area of the circle

so

by proportion

Find the area of the blue sector for an angle of 60 degrees

\frac{49\pi}{360}=\frac{x}{60}\\ \\x={49\pi*60/360

x=25.64\ in^{2}

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Answer:

Hydrostatic Force = 35.28KN

Step-by-step explanation:

To solve this question, let's consider integrating the hydrostatic force from the top of the triangle to the bottom.

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3 years ago
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3 years ago
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