How many metallic spheres, each of diameter 6 cm can be melted to mould into a solid cylinder of diameter 8 cm and height of 18 cm?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 8
Let n be the metallic spheres
According to the question
Volume of the cylinder = n * Volume of the metallic spheres
π * (8/2)2 * 18 = n * (4/3) * π * (6/2)3
64 * 18/4 = n * 4 * 27/3
n = 8