How to find the length of a diagonal of a rectangle with length given as l and breadth given as b.
We will use the properties of the rectangle in order to find the length of the diagonal.
Answer: d (diagonal) = √ (l2 + b2)
Let us consider a rectangle ABCD with AB as length a, BC as breadth b, and AC as diagonal d as shown in the figure below.
We have been given a rectangle with length as a and breadth as b.
We also know that all angles of the rectangle are 90°. Hence, the angle ABC = 90°.
Hence, d (diagonal) = √ (a2 + b2)