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How many iron rods, each of length 7 m and diameter 2 cm can be made out of 0.88 cubic meter of iron?

A. 200

B. 330

C. 400

D. 450

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Correct Answer : C.


      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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