Question

A copper sphere of radius 4.2 cm was melted and made into thin wire of lenght 1260cm , find the thickness of the wire.​

Answer 1

here is the answer dude

hope it helps u ..........

Answer 2

Answer:

Thickness of the wire = 0.52 cm

Step-by-step explanation:

Radius of the sphere = 4.2 cm

Volume of sphere. = 4/3 ×π×4.2×4.2×4.2

= 91.72π cm cube

Volume of wire = volume of sphere

π × r^2 × 1260 = π × 91.72

r^2 = 91.72/1260

r = 0.26 cm

thickness of the wire = 2r

= 0.52 cm