Question

The external diameter of a ball is 12cm.If the ball is made of material of thickness 0.3cm,calculate the volume,in cube cm,of the material used.

Answer 1

@AkashdeepDeb

Answer 2

Getting this diagram? :)

Answer 3

yes

Answer 4

calculate the volume of the ball with external diameter and internal diameter(substracting thickness twice from diameter).... and subtract them...

Answer 5

Volume of material = Volume of the whole ball - Volume of the air contained in the smaller sphere.

Got this? :)

Answer 6

yes

Answer 7

Got it

Answer 8

Thank you @AkashdeepDeb

Answer 9

Volume of material = \(\frac{4}{3} \pi . r^3\)
Calculate the difference and equate!

You're welcome. :)