Question

find the lenght of diagonal of rectangle whose sides are 5cm and 12cm

Answer 1

diagonal= √ (12)²+(5)²=√144+25= √169= 13 cm

Answer 2

The length of the rectangle is 12cm = L.

The breadth of the rectangle is 5 cm = B.

Let the Diagonal be D.

We have to use Pythagoras Theorem to solve this.

D^2 = L^2 + B^2

D^2 = 12^2 + 5^2

D^2 = 144 + 25

D^2 = 169

D = SQRT(169)

D = 13 cm.

The Length of the Diagonal is 13cm.