Question

Find the length of the radius of circle C

Answer 1

Answer:

Option D. r = 15 units

Step-by-step explanation:

In this question Length of arc is given as s = $\frac{20}{3}\pi$

and angle inscribed at the center is θ = $\frac{4\pi }{9}$

By the formula s = rθ

By placing the values of s and θ we can get the length of radius

$\frac{20\pi }{3}=r(\frac{4\pi }{9} )$

r = $\frac{\frac{20\pi }{3} }{\frac{4\pi }{9} }$

r = $\frac{20\pi }{3}\times \frac{9}{4\pi }$ = 15 unit

Therefore, Option D. r = 15 will be the answer.

Answer 2

Your answer would be C.) because remember always PIE-3.14 and i also did the test