What is "if ab = 10 ft?

The given information "if ab = 10 ft" is not sufficient to provide a complete answer or explanation. In geometry or algebra, the equation "ab = 10 ft" could represent two variables, a and b, whose product is equal to 10 feet. Without additional context or equations, it is not possible to determine the specific values of a and b or the geometric interpretation of this equation. More information or context is needed to give a more detailed explanation.