Question

ABC is a triangle , right - angled at C. IF AB = 25 cm and AC = 7 cm ,find BC. No .2 solve..

Answer 1

Given that ABC is a right triangle and it is right angles at C.

∴ Side AB, which is opposite to ∠C, is the hypotenuse.

AB = 25 cm

AC = 7 cm

Let's find the length of BC by Pythagoras' Theorem.

BC = √(AB² - AC²)

= √(25² - 7²)

= √(625 - 49)

= √576

= 24 cm

∴ 24 cm is the answer.

Thank you. Have a nice day.

#adithyasajeevan

Answer 2

Let the length of BC be x cm.

By Pythagoras theorem,

= > AB^2 = AC^2 + BC^2

= > (25)^2 = (7)^2 + (x)^2

= > 625 = 49 + x^2

= > 625 - 49 = x^2

= > 576 = x^2

$= > x = 24cm$

Therefore, the length of BC is 24cm.

Hope this helps!