Question

. Construct ∆ABC such that AB = 5 cm, BC = 9 cm
and BÂC = 90°. Measure and write down the
length of AC.
please answer in detail​

Answer 1

In triangle in △ ABC, by Pythagoras theorem

AC

2

=AB

2

+AC

2

Given, AB=5 cm, BC=x

5

2

=x

2

+3

2

x

2

=5

2

−3

2

=25−9=16

x=

16

=4 cm

Hence, AB=4 cm.