Answer:
1/7
Step-by-step explanation:
The probability that the Captain hits is \dfrac{1}{2}
2
1
start fraction, 1, divided by, 2, end fraction.
The probability that the pirate hits is \dfrac{2}{7}
7
2
start fraction, 2, divided by, 7, end fraction.
1/2 x 2/7 = 1/7
From the chord theorem we have:

There's nothing preventing us from computing one integral at a time:



Expand the integrand completely:

Then

It would be .345% because to change it to a percent all you have to do is move the decimal point two places to the right.