Question
How many iron rods, each of length 7 m and diameter 2 cm can be made out of 0.88 cubic metre of iron?
How many iron rods, each of length 7 m and diameter 2 cm can be made out of 0.88 cubic metre of iron?
Answer: Option C
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Volume of 1 rod = (( 22/7) x (1/100) x (1/100) x 7 ) cu.m = 11/5000 cu.m
Volume of iron = 0.88 cu. m
Number of rods = (0.88 x 5000/11) = 400
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