10th Class
Mathematics
Triangles
Question Bank
Triangles
question_answer
Two 26 m strings are tied to a concrete pedestal between two poles having heights of 24 m and 25 m respectively. What is the distance between the poles? (Consider the top of pedestal to be on the same level as the base of the poles).
A) 15 m
B) 21 m
C) 17 m
D) 28 m
Correct Answer:
C
Solution :
(c): Mental thinking is important here. The moment you draw the figure, you have solved the problem. \[\Rightarrow \] \[x=\sqrt{{{26}^{2}}-{{24}^{2}}}=10\] Similarly, \[y=7\] \[\Rightarrow \] \[x+y=17\,m\]