The volume of a 1-metre iron rod is 1386cu.cm.Find it's diameter
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given volume of one metre iron rod= 1386 cu. cm
length of iron rod=100 cm
πr×r×h=1386
22\7×r×r×100=1386
r×r=1386×7÷22×100
r=2.1
diameter=2×2.1=4.2 cm
length of iron rod=100 cm
πr×r×h=1386
22\7×r×r×100=1386
r×r=1386×7÷22×100
r=2.1
diameter=2×2.1=4.2 cm
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