It looks like you are asking for assistance with a calculation involving a ramp length, but I need more details about the specific equation or problem you would like me to solve.
For example, if you are working with a right triangle where the height (vertical rise) and the base (horizontal run) are known, you might be referring to the Pythagorean theorem:
\[ c = \sqrt{a^2 + b^2} \]
where:
- \(c\) is the length of the ramp (hypotenuse),
- \(a\) is the height of the ramp,
- \(b\) is the length of the base.
Please provide the values for the height and the base or any specific equation you have in mind, and I'll assist you in solving it!