Answer the question.
-If a rectangle is $x$ feet long and $y$ feet wide, which one of the following expressions is the length of its diagonal in terms of $x$ and $y$ ?
A) $x ^ { 2 } + y ^ { 2 }$
B) $\sqrt { x + y }$
C) $\sqrt { x ^ { 2 } + y ^ { 2 } }$
D) $x + y$

Question

Quizplus · Accepted Answer

The length of the diagonal of a rectangle can be found using the Pythagorean theorem, which states that in a right-angled triangle, the square of the length of the hypotenuse (the side opposite the right angle) is equal to the sum of the squares of the lengths of the other two sides. Therefore, if a rectangle has sides of lengths $x$ and $y$, the length of its diagonal $d$ is given by $d = \sqrt{x^2 + y^2}$.

Answer the Question xxx Feet Long And yyy Feet Wide, Which One of the Following Expressions Is the And y

Answer the Question $x$ Feet Long And $y$ Feet Wide, Which One of the Following Expressions Is the And y