Question

length of the wire is ??

Answer 1

IF WE CONVERT SPHERE OF A GOLD INTO WIRE (WIRE IS SHAPE OF CYLINDER)
SO VOLUME OF GOLD IS EQUALS TO VOLUME OF WIRE ( CILYNDER)
MEANS

HERE RADIUS = R = 9 CM(GOLD)
RADIUS = r = 2mm = 0.2 CM (WIRE)

VOLUME OF GOLD = VOLUME OF WIRE (CYLINDER)
4/3 πR³. =. πr²h
4R³/3. = r²h
4R³ = 3r²h
4(9)³ = 3(0.2)²(h)
2916 = 0.12 × h
2916/0.12 = h
24300 cm = h
2430 m = h

WIRE IS FORM OF CYLINDER SO HERE HIEGHT OF THE CYLINDER IS EQUALS TO THE LENGTH(WIRE HIEGHT) OF THE WIRE

SO 4) 2430 M OPTION IS RIGHT