Triangle ABC is right angled at B. If AC = 41 cm and AB = 40 cm, then BC = __________________ cm

Open in App

Solution

It is given that
Triangle ABC is right angled at B
Also, AC = 41 cm and AB = 40 cm
By pythagoras theorem, we have
$A C^{2} = A B^{2} + B C^{2}$
$41^{2} = 40^{2} + B C^{2}$
$1681 - 1600 = B C^{2}$
BC = $\sqrt{81}$
BC = 9 cm

Suggest Corrections

Similar questions

In a right triangle ABC, ∠B = 90°.

(a) If AB = 6 cm, BC = 8 cm, find AC

(b) If AC = 13 cm, BC = 5 cm, find AB

$A B C$ is a triangle right angled at $C$ . If $A B = 25 c m$ and $A C = 7 c m$ , find $B C$ .

△

Join BYJU'S Learning Program