Find the length of the diagonal of a rectangle whose sides are 15 cm and 8 cm.

Question

Philoid · Accepted Answer

We have

Here, we are given with

CD = 15 cm

BD = 8 cm

We need to find BC.

So, by Pythagoras theorem that says

(Hypotenuse)² = (Perpendicular)² + (Base)²

⇒ BC² = 8² + 15²

⇒ BC² = 64 + 225

⇒ BC²= 289

⇒ BC = √289

⇒ BC = 17

Thus, the length of diagonal is 17 cm.