Ответ:
\(c=\sqrt{a^2+b^2}=\sqrt{5^2+7^2}=\sqrt{25+49}=\sqrt{74}\approx8.60\).
\(c=\sqrt{a^2+b^2}=\sqrt{3^2+11^2}=\sqrt{9+121}=\sqrt{130}\approx11.40\).
Ответ: 1) 8,60; 2) 11,40.
\(c=\sqrt{a^2+b^2}=\sqrt{5^2+7^2}=\sqrt{25+49}=\sqrt{74}\approx8.60\).
\(c=\sqrt{a^2+b^2}=\sqrt{3^2+11^2}=\sqrt{9+121}=\sqrt{130}\approx11.40\).
Ответ: 1) 8,60; 2) 11,40.