Answer:
13.448, rounded off: 13.5 ft
Step-by-step explanation:

Where r = radius, C = circumference.
= 13.5 ft
Answer:
Refraction is what happens when light passes through some medium and changes it's direction because of it. For instance, when light travels through a lens light is bent as it goes from air to glass and back to air again. :)
17/10 is what ur looking for
For example, for LCM (12,30) we find:
Using the set of prime numbers from each set with the highest exponent value we take 22 * 31 * 51 = 60. Therefore LCM (12,30) = 60.