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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 metre of iron.

A.400
B.800
C.1200
D.1600
Answer and Feedback
Answer:A
Feedback:Volume of 1 rod = (22/7 x 1/100 x 1/100 x 7) = 11/5000 cu.cm
Volume of iron = 0.88 cu. m
Number of Rods = (0.88 x 5000/11) = 400

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Practice Volume & Surface Area Online Test 3 | Englishfreetest.com

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