Réponses

2014-05-29T20:36:06+02:00
P=2*pi*r
2*pi*r=94
r=47/pi

V=1/2*4/3*pi*r^3
=2/3*pi*(47/pi)^3
=2/3*47³/pi²
=7012,9775 cm³
=7,013 dm³ (arrondi)