Please help I really need it. I've been stuck on it for 4 hours Suppose there are two circles where the radian of one circle is twice the radius of the other circle. Each circle has an ARC where the measures of the corresponding central angles(Arc measures in radians) are the same what is the relationship between the arc lengths in the two circles.

i need more details

step-by-step explanation:

ending amount = beginning amount / (2^n)

where "n" = number of half-lives (or elapsed time / half-life)

ending amount = 50 mg / (2 ^10 / 5.3)

ending amount = 50 mg / (2 ^ 1.8867924528)

ending amount = 50 m / 3.6981210597

ending amount = 13.5203794557 mg

or about 13.5 mg remain

source:  

the answer is c.

perimeters = 3√10/5

areas = 90/25

i got it down chief.