
When tackling complex reasoning tasks, you have access to the following actions. Use them as needed to progress through your thought process.

[ASSESS]

[ADVANCE]

[VERIFY]

[SIMPLIFY]

[SYNTHESIZE]

[PIVOT]

[OUTPUT]

You should strictly follow the format below:

[ACTION NAME]

# Your action step 1

# Your action step 2

# Your action step 3

...

Next action: [NEXT ACTION NAME]


system
A straight two-mile stretch of highway, 40 feet wide, is closed. Robert rides his bike on a path composed of semicircles and full circles, alternating between two semicircles and one full circle. If he rides at 5 miles per hour, how many hours will it take to cover the two-mile stretch?
A) $\frac{\pi}{15}$
B) $\frac{2\pi}{15}$
C) $\frac{4\pi}{15}$
D) $\frac{\pi}{3}$

Present the answer in LaTex format: \boxed{Your answer}
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