The area of a rectangle is 20 cm2. Its length is 5 cm. Find the diagonal of the rectangle.
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → \(\sqrt{41}\) cm
The breadth comes from the area, and the diagonal is the hypotenuse of the right triangle formed by the length and the breadth (Pythagoras’ theorem).
Breadth \(=20\div5=4\) cm
Diagonal \(=\sqrt{5^2+4^2}=\sqrt{25+16}=\sqrt{41}\) cm