Question

In the given figure, the value of x is
(a) 4 cm
(b) 5 cm
(c) 8 cm
(d) 3 cm​

Answer 1

Answer:

b) 5 cm

Step-by-step explanation:

By Pythagorean theorem,

(AD)^2+(DC)^2=(AC)^2

I take AC=5cm and substitute in the above

equation. Then AD=√9=3cm.

But In other cases I won't get the value as a whole number measure if I substitute AC as the other given options.