We know, Volume of a Sphere = 4/3 πr³
v = 4/3 * 3.14 * 18³
v = 4.186 * 5832
v = 24,416.64 cm³
Volume of a Sphere = 4/3 πr³
v = 4/3 * 3.14 * 12³
v = 4.186 * 1728
v = 7234.56 cm³
Difference = 24,416.64 - 7234.56 = 17182.08
In short, Your Answer would be: 17182.08 cm³
Hope this helps!
I think it is the first one could be wrong tho
14/18-9/18=5/18 it can't be simplified anymore
Answer: He now weighs 4.2 kg because 4/10 of 3 is 1.2 and 1.2+3=4.2
