Question

4)Find the length of the hypotenuse of a right angled triangle if remaining sides are 9cm,

&12cm​

Answer 1

Answer:

15cm

Step-by-step explanation:

a²+b²=c² .... Pythagoras theorem

a=9cm

b=12cm

c=?

81+144=c²

225=c²

c= 15 cm

Hypotenuse=15cm

Answer 2

Step-by-step explanation:

In right angled triangle ABC

side AB = 9cm, side BC = 9cm

AC = ?

In ∆ABC, LABC= 90°.......(given)

by Pythagoras theorem

hyp² = one side² + second side²

hyp² = 9² + 9²

hyp² = 81 + 81

hyp² = 162

hyp = √162

hyp = √ 81 x 2

hyp = 9√2 cm

therefore, length of hypotenuse is 9√2 cm.