Question

ABCD is a rectangle. If AB = 5 cm and BC = 12 cm, find the diagonal BD.​

Answer 1

Answer:

attached in pic form hope u understand

Answer 2

Given:

Rectangle ABCD

AB = 5cm

BC = 12cm

To Find:

Diagonal BD

Solution:

Since ABCD is a rectangle

i.e,  AD = BC = 12cm

AB = DC = 5cm

Now in Δ ABD

Applying Pythagoreus theorem:

⇒ BD² = AD² + AB²

⇒ BD² = (12)² + (5)²

⇒ BD² = 144 + 25

⇒ BD² = 169

⇒ BD = $\sqrt{169$ = 13cm

So, diagonal BD = 13cm.