Question -
Answer -
Given,
Radius of the sphere =9/2 cm
So, its volume = 4/3πr3 = 4/3 π(9/2)3
And, the radius of thewire = 2 mm = 0.2 cm
Let the length of thewire = h cm
So, the volume of wire= πr2h = π(0.2)2h
Then, according to thequestion we have
Volume of wire =Volume of sphere
π(0.2)2h =4/3 π(9/2)3
h = 4 x 729/ (3 x 8 x0.01) = 12150 cm
Therefore, the lengthof the wire = 12150 cm