The volume of a circular iron rod of length 1 m is 3850 cm'. Find its diameter.
A closed cylindrical tank of diameter 14 m and height 5 m is made from a sheet of
How much sheet of metal will be required?
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The volume of a circular iron rod of length 1 m is 3850 cm'. Find its diameter.
A closed cylindrical tank of diameter 14 m and height 5 m is made from a sheet of
How much sheet of metal will be required?
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Answer:
Volume = 3850 cm3
Length i.e. height = 1 m = 100 cm
Volume = πr2h 22/7 x r2 x 100 = 3850 r2 = 3850/100 x 7/22 r2 = 12.25 r = √12.25 r = 3.5
So, the diameter of the rod is 2 x 3.5 i.e. 7 cm.
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