The hypotenuse will be bigger than either of the legs so we can rule out B and C. It will be pretty close to the diagonal of a 3×3 square so 3√2 = 3 × 1.4 = 4.2. Our preliminary guess is A.
[tex]c^2 = a^2 + b^2[/tex]
[tex]c = \sqrt{a^2 + b^2}[/tex]
[tex]c = \sqrt{3.4^2+2.6^2} \approx 4.3[/tex]
Choice A
