1. It seems like you're asking about how to determine or calculate the length in a given problem. 2. To help you precisely, please provide the specific problem or context involving the length. 3. Length usually refers to the distance or magnitude of an object or segment, calculated using formulas depending on the problem, such as the distance formula in coordinate geometry: $$\text{Length} = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2}$$. 4. Please share the exact question or details to proceed with a step-by-step solution involving length.