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bekas [8.4K]
3 years ago
10

For a circle of radius 3 feet, find the arc lengths subtended by a central angle of 57 degrees.

Mathematics
2 answers:
mafiozo [28]3 years ago
8 0

Answer: The length of an arc is 2.98 feet.

Step-by-step explanation:

Since we have given that

Radius of a circle = 3 feet

Angle subtended at the centre = 57°

We need to find the length of an arc:

As we know the formula for "Length of an arc":

Length=\dfrac{\theta}{360^\circ}\times 2\pi r\\\\Length=\dfrac{57}{360}\times 2\times \dfrac{22}{7}\times 3\\\\Length=2.98\ feet

Hence, the length of an arc is 2.98 feet.

tigry1 [53]3 years ago
7 0
\bf \textit{arc's length}\\\\
s=\cfrac{\theta \pi r}{180}\quad 
\begin{cases}
r=radius\\
\theta =angle~in\\
\qquad degrees\\
------\\
r=3\\
\theta = 57
\end{cases}\implies s=\cfrac{57\cdot \pi \cdot 3}{180}
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