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3 years ago

1. radius = 7 ft, central angle = 18° Find arc length.

Mathematics

1 answer:

Vlada [557]3 years ago

7 0

Answer:

2.2 ft ( to 1 dec. place )

Step-by-step explanation:

The arc length is calculated as

arc = circumference × fraction of circle

= 2πr × $\frac{18}{360}$

= 2π × 7 × $\frac{1}{20}$

= 14π × $\frac{1}{20}$

= $\frac{14\pi }{20}$ ≈ 2.2 ft

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