The volume of a circular iron rod of length 1 m is 3850 cm3. Find its diameter.
It is given in the question that,
Volume of cylindrical rod = 3850 cm3
Height of the rod = 1m = 100cm
Now,
In order to find the diameter of the rod we need to find the radius of the rod
Hence,
Volume of cuboid = 
3850 = 
3850 = 
r2 = 
r = 1.75× 7
r = 3.5 cm
Hence,
Diameter = 2(radius)
= 2 × 3.5
= 7 cm
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