What is the length of the diagonal of the rectangle?

29.75

21.25

10.625

126.4375

Answer: Unknown

Step-by-step explanation:

A diagonal of a rectangle cuts the rectangle into 2 right triangles with sides equal to the sides of the rectangle and with a hypotenuse that is the diagonal. All you need to do is use the pythagorean theorem: where a and b are the sides of the rectangle and c is the length of the diagonal.