Imagine this as a circle. The circle will have a radius of 17mi and the lighthouse will be in the middle. The area of the circle will be the area over which the beacon can be seen.

is the equation for the area of the circle where A is the area.
Now we simply plug in our information
A=

A=907.9
Answer:
If we're talking about the least common multiple of the three numbers, then its 144
Step-by-step explanation:
I searched it up on Google. Not sure how accurate the information may be though.
i think the answer to this problem is49