Question 77

The length of the longest rod that can be placed in a room which is 12 m long 9 m broad and 8 m high is

Solution

Length of longest rod will be placed as a diagonal of length = $$\sqrt{l^2+b^2+h^2}$$

= $$\sqrt{(12)^2+(9)^2+(8)^2}$$

= $$\sqrt{144+81+64}=\sqrt{289}$$

= $$17$$ m

=> Ans - (C)

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