From each end of a solid metal cylinder,metal was scooped out in hemispherical form of same diameter. The height of the cylinder is 10cm and its base is of radius 4.2cm. The rest of the cylinder is melted and converted into a cylindrical wire of thickness 1.4cm. Find the length of the wire. (Use pi= 22/7)
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the answer is 39.6 cm.
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