Question

the hypotenuse of a triangle is 25cm . if one of its sides is 15cm ,find the length of the otherside

Answer 1

a^2-b^2=c^2 ( by Pythagoras theorem )
(25)^2- (15)^2=c^2
625- 225=c^2
400=c^2
20=c
therefore the length of other side= 20 cm

Answer 2

Pythagoras theorem= a^2+b^2=c^2
15^2+b^2=25^2
225+b^2=625
b^2=625-225
b^2=400
b=√400=20
ANS= Length of the other side= 20cm