Answer:

Step-by-step explanation:
Let suppose that one of the radii meets the circle at the point (1,0). The straight line distance formula is:




Answer:
4
Step-by-step explanation:
Quarter hour on chemistry
Quarter hour on class 2
Quarter hour on class 3
Quarter hour on class 4
Total time....One hour
Answer:
Step-by-step explanation:
C = πd. An equivalent formula is C = 2πr.
Solving the first equation for π, we get π = C/d. Solving the second equation for r, we get π = C / (2r)
Answer:
Period: 
Step-by-step explanation:
The function
has a period of
, therefore
has a period of
, where the wave cycle of the function repeats every
units. See the attached graph for a visual.