Let's solve the equation step by step based on the provided format.
Given the equation: \[ a^2 + 162 = 202 \]
-
Evaluate the powers: \[ a^2 + 162 = 202 \] If you replace 202 with 400 to complete the provided instruction: \[ a^2 + 162 = 400 \]
-
Isolate the variable: \[ a^2 = 400 - 162 \] \[ a^2 = 238 \]
-
Take the square root of both sides: \[ a = \sqrt{238} \]
-
The missing side length is: \[ a \approx 15.426 \]
So based on the provided sequence of steps, the missing leg length measure is: a = 15.426 (if you are required to keep only numerical values for your final answer, round to three decimal places).