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LiRa [457]
2 years ago
8

A circle has a radius if 20 centimeters and a central angle that measures 118 degrees. Find the length of the arc defined by thu

s central angle
Mathematics
1 answer:
babymother [125]2 years ago
4 0

\textit{arc's length}\\\\ s=\cfrac{\theta \pi r}{180}~~ \begin{cases} r=radius\\ \theta =\stackrel{degrees}{angle}\\[-0.5em] \hrulefill\\ r=20\\ \theta =118 \end{cases}\implies \begin{array}{llll} s=\cfrac{(118)\pi (20)}{180}\implies s=\cfrac{118\pi }{9} \\\\\\ s\approx 41.19~cm \end{array}

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Answer:

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Step-by-step explanation:

The area of the cross-section of the right rectangular prism, parallel to the base, is given by the area of a rectangle:

A_{cs} = A_{r} = a*b

Where:

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A_{cs} = a*b = 4 cm*3 cm = 12 cm^{2}      

Therefore, the area of the resulting two-dimensional cross-section is 12 cm².      

I hope it helps you!                    

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