Question

a wire with diameter 1cm is prepared by melting a sphere of radius 6cm. what will be the length of the wire​

Answer 1

volume of wire= volume of sphere ( because is melting)

π.r2.h =4/3 .π.R3 ( R is radius of sphere) and . means MULTIPLE

π is cut by π

so

r2.h=4/3.R3

(1/2)2.h= 4/3. (6)3

1/4.h = 4/3.6.6.6

h=4.4.6.6.6/3

h= 16.36.2

h=1152 cm h is length

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