A) 1.54 m
B) 154 m
C) 7.7 m
D) 77 m
Correct Answer: A
Solution :
[a] Let the height of platform = h m According to the question, \[400h=\frac{22}{7}\times {{(3.5)}^{2}}\times 16\] \[\Rightarrow \] \[h=\frac{22\times {{(3.5)}^{2}}\times 16}{7\times 400}\] |
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