Answer:
13 cm
Step-by-step explanation:
The diagonal of a rectangle forms a right triangle; where the diagonal is a hypotenuse, and two sides of the rectangle are legs.
Using pythagorean's theorem ([tex]a^2 + b^2 = c^2[/tex]), we can say:
[tex]5^2 + 12^2 = c^2\\25 + 144 = c^2\\169 = c^2\\13 = c[/tex]
The hypotenuse is equal to 13cm.
