How many iron rods, each of length 7 m and diameter 2 cm can be made out of 0.88 cubic meter of iron? Choose the correct choice from the following
A) 150  B) 100  C) 250  D) 200  E) 400
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.   Answer is 400
<result>E</result>
How many iron rods, each of length 7 m and diameter 2 cm can be made out of 0.88 cubic meter of iron?