Final answer:
The length of the full-size boat is 40 meters.
Step-by-step explanation:
To find the length of the full-size boat, we can use the given scale and the length of the model boat. The scale is 1 centimeter equals 5 meters, and the model boat is 8 centimeters long.
Using this information, we can set up a proportion:
1 centimeter / 5 meters = 8 centimeters / x meters
Cross multiplying, we get:
1x = 8 * 5
So, the length of the full-size boat is 40 meters.