Dau coroana si 50 puncte

Răspuns:
A.l. = 2•pi•RG
A.t. = 2•pi•RG + 2•pi•R^2
V = pi•R^2•h
a)
A.l. = 56pi
A.t. = 56pi + 32pi = 88pi
V = 112pi
b)
A.l. = 96pi
A.t. = 96pi + 72pi = 168pi
V = 288pi