Question

some plastic balls of radius 1 cm are melted and cast into a tube the thickness length and Outer radius of the tube were 2cm 90cm and 30cm respectively. how many balls were melted to make the tube ?​

Answer 1

hi it's a good one from mensuration.

let n be the no. of plastic balls required.

n × vol of balls =vol of tube

n× 4/3πr³= πr²h

follow me for quick response and quality answers.