Question

Use the arc length formula and the given information to find r. Show your work for full credit.
s = 8.1 ft θ = (3.14/3)rad r = ?

Answer 1

\(\bf s = 8.1\qquad \qquad \theta = \cfrac{\pi}{3}\\ \quad \\ \quad \\
s = r\theta \implies \cfrac{s}{\theta} = r
\)
angle in radians

Answer 2

I got 8.478

Answer 3

hmm.... I got something else

Answer 4

Ohh how'd you get it ?

Answer 5

\(\bf \cfrac{8.1}{\frac{\pi}{3}} \implies \cfrac{8.1}{1} \times \cfrac{3}{\pi}\)

Answer 6

76.302?

Answer 7

\(\bf s = 8.1\qquad \qquad \theta = \cfrac{\pi}{3}\\ \quad \\ \quad \\
s = r\theta \implies \cfrac{s}{\theta} = r\\ \quad \\ \quad \\
\cfrac{8.1}{\frac{\pi}{3}} \implies \cfrac{8.1}{1} \times \cfrac{3}{\pi} \implies \cfrac{8.1 \times 3}{\pi}\)

what would this give you?

Answer 8

7.38

Answer 9

hmm... I get 7.7388, but close enough I guess

Answer 10

Thank you so much (:

Answer 11

yw

Answer 12

Yeah I got that but my finger missed the 7 before 38 haha

Answer 13

7.73493023426611331837 =)

Answer 14

That works too (: