A) 1 : 600
B) 1: 200
C) 1 : 240
D) 1: 320
Correct Answer: D
Solution :
Given, Length of hall \[=20\text{ }m,\]Width \[=16\text{ }cm.\] Let height of hall is h m Then by hypothesis, Area of the floor + Area of roof = Area of 4 walls or \[20\times 16+20\times 16=2(20+16)h\] or \[320=72h\] or \[h=\frac{320}{72}=\frac{80}{9}\,m\] Hence, ratio of height to volume of hall \[=\frac{80}{9}:20\times 16\times \frac{80}{9}\] \[=1:320\]You need to login to perform this action.
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