Question

Construct AABC, with AB = 5 cm, BC = 3 cm and <A = 90°.​

Answer 1

Correct option is

B

4 cm

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.

Or

Simply after constructing, we can measure AB side.