Question

Find the length of each arc. Round your answers to the nearest tenth. NO LINKS!! Part 1​

Answer 1

Answer:
5) 18.8 cm
7) 49.5 ft

Explanation:
The formula for arc length is S = θ * r

5) S = 18 cm * Pi/3 (60 degrees in radians)
S = 6 Pi cm
S ≈ 18.8 cm


7) S = 9 ft * 7 Pi / 4
S = 63 Pi ft / 4
S ≈ 49.5 ft

Answer 2

Length of arc=r$\theta$

So

#1

$\\ \rm\Rrightarrow Area=18(\pi/3)=6\pi cm$

#2

$\\ \rm\Rrightarrow Area=9(7\pi/4)=63\pi /4ft$