A solid copper sphere of surface area 1386 cm sq is melted and drawn into a wire of uniform - Maths - Surface Areas and Volumes

Question

A solid copper sphere of surface area 1386 cm sq is melted and
drawn into a wire of uniform cross section If the lenght of the
wire is 31 5 m , find the diameter of wire !!

Gopal Mohanty · Accepted Answer

Hi Afzal! Here is the answer to your question Let r be the radius of the copper sphere Let R be the radius of the wire Length of the wire, H = 31 5 m Given that surface area of the copper sphere is 1386 sq cm ∴ 4Πr2 = 1386 sq cm

The sphere is recasted to form the wire Thus, volume of the wire formed = Volume of the solid sphere

Thus, the diameter of the wire is 2 × 0 7 cm = 1 4c m Hope! This will help you Cheers!

A solid copper sphere of surface area 1386 cm sq. is melted and drawn into a wire of uniform cross section . If the lenght of the wire is 31.5 m , find the diameter of wire !!