What is the length of the diagonal of the rectangle?

A) 2.5 units

B) 4.5 units

C) 5 units

D) 7 units

Answer: 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.

Answer: the answer is C 5 units