How much air is needed to fill a ball with a diameter of 7 centimeters

Question

asked Feb 3, 2019 58.8k views

1 Answer

Roy Paterson · Answer 1 · 2019-02-08T12:11:14+0000

you need the volume, and the baloon is a sfere

you have the diameter that is 2 * r

7 : 2 = 3.5 cm (r)

V = 4/3πr³

V = 4/3 * 3.14 * 3.5³

V = 179,59 cm³ (you can round to 179.6)