The sides of the rectangle are 3cm and 4cm. Find the diagonal.

When we draw a diagonal in a rectangle, we get two rectangles. If we consider one rectangle, then the legs are known, and the hypotenuse must be found. The legs are the sides that make a right angle, and the hypotenuse is the side opposite the right angle.

In order to find the hypotenuse, you need to get the root from the sum of the squares of the legs.

x = 9 + 16 (under the root)

x = 25 (under the root).

You need to find a number that squared gives the number 25. This number is 5.

Answer: The hypotenuse of the square is 5 centimeters.