question_answer

Two poles of height 13 m and 7 m, respectively stand vertically on a plane ground at a distance of 8 m from each other. The distance between their tops is

A) 9 m                              

B) 10 m

C) 11 m                            

D) 12 m

Correct Answer: B

Solution :

According to the question,

\[{{6}^{2}}+{{8}^{2}}={{x}^{2}}\]

\[\Rightarrow \]   \[{{x}^{2}}=100\]\[\Rightarrow \]\[x=10\,\,m\]