Question

In the given right-angled triangle, if AB = 3 cm, BC = 4 cm, then the length of AC is

___cm.

Answer 1

By Pythagoras theorem we know that

$A{C}^2=A{B}^2+B{C}^2$

So, $A{C}^2=4^2+3^2=16+9=25$

AC = 5 cm