It appears that you're referring to a question involving the Pythagorean theorem, which states that for a right-angled triangle, the sum of the squares of the two legs (a and b) equals the square of the hypotenuse (c). The formula can be expressed as:
\[ a^2 + b^2 = c^2 \]
To assist with your question, could you provide the specific lengths of the legs (the sides of the smaller squares) you are working with? Once I have that information, I can help you calculate the hypotenuse and determine which of the provided responses is correct.