### Home > CALC > Chapter 12 > Lesson 12.2.2 > Problem 12-80

12-80.

A rowboat is tethered to a long dock by two ropes, each

The boat's owner unties one of the ropes from the dock, and brings the boat toward the dock by walking along it *away* from the other rope at a rate of

Draw a diagram where the distance from the dock, which is the height of an isosceles triangle.

Let

*distance the owner has walked.*

When the owner has walked .

Substitute in the known values and solve for .