PrepBharat

a) $$\sqrt {2a} \,{\text{metres}}$$ b) $$\frac{a}{{2\sqrt 2 }}\,{\text{metres}}$$ c) $$\frac{a}{{\sqrt 2 }}\,{\text{metres}}$$ d) $$2a\,{\text{metres}}$$ Answer: b Explanation: Let height ...

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