Question

observe figure and find length of side ad in cm.
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Answer 1

Answer:

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Answer 2

Answer:

8 cm

Step-by-step explanation:

Given :

AB = 4cm

BC = 4 CM

AC =CD

L ABC =90°

In ∆ ABC,

by Pythagoras theorem,

AC^2 = AB^2 + BC^2

= 4^2 + 4^2

= 16 + 16

= 32

= 2 X 16

$ac= 4 \sqrt{2}$

AC = DC =4√2

In ∆ACD,

L ACD = 90°

By Pythagoras theorem,

AD^2 = AC^2 + DC^2

= (4√2)^2 + (4√2)^2

= (16 X 2) + (16 X 2)

=32 + 32

=64

AD = 8 CM