R = 8 cm
G = [tex] \frac{R}{2} = \frac{8}{2} = 4[/tex] cm
V = [tex] \pi R^{2} G[/tex] = [tex] \pi 8^{2} *4[/tex]
= [tex]64 \pi * 4[/tex]
= 256[tex] \pi [/tex] [tex]cm ^{3} [/tex]
[tex] A_{sect} = 2RG[/tex]
[tex]A_{sect} = 2 * 8 * 4 = 16*4 [/tex]
[tex]A_{sect} = 64 cm^{2} [/tex]
