Question

What is the length, in feet, of the hypotenuse of a right angled triangle with the lengths of its perpendicular sides as $6$ feet long and $7$ feet, respectively?

• A. $\sqrt{13}$
• B. $\sqrt{85}$
• C. $13$
• D. $21$
• E. $42$

Answer 1

Answer: (B)

$\sqrt{85}$

The length of the hypotenuse of a right angled triangle with the lengths of its perpendicular sides as $6$ feet long and $7$ feet is given by:

$L=\sqrt{7^2+6^2}=\sqrt{49+36}=\sqrt{85}$