A sphere of diameter 18 cm has been melted to make cylinder of radius 3 cm and height 2 cm. The total number of cylinder made out will be:
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 54.
Let the number of cylinders made be N.
Volume of sphere =
Volume of cylinder =
Where R is radius of sphere and r is radius of cylinder.
According to the given question,
⇒ 4 × 3 × 81 = N × 9 × 2
⇒ N = 54