question_answer

A flag pole 18 m high casts a shadow 9.6 m long. What is the distance of the top of the pole from the far end of the shadow?

A)  20 m                          

B)  20.04 m

C)  20.4 m      

D)  24 m

Correct Answer: C

Solution :

            Ans.                     \[\therefore \] Required distance          \[=\sqrt{{{(18)}^{2}}+{{(9.6)}^{2}}}\] \[=\sqrt{324+92.16}\] \[=\sqrt{416.16}=20.4\,\text{m}\]