how much iron is needed to make a rod of length 90 cm and diameter 1.4 CM
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Answered by
4
I think answer is 277.2 cm^2
Answered by
11
Answer:
138.6 cu.cm of iron is needed.
Step-by-step explanation:
Diameter of rod = 1.4 cm
Radius of rod = 1.4/2 = 0.7 cm
Length (Height) of rod = 90 cm
Thus, volume = (22*7*7*90)/(7*10*10) = 138.6 cu.cm
Hence, 138.6 cu.cm of iron is needed.
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