3.14×152×10 = 7065 (cubic centimeter),

A: The volume of the cake is 7065 cubic centimeters;

(2) Yes, because the diameter and height of the cake are smaller than the box;

(3)(40×2+30×2)×3+30

=(80+60)×3+30,

= 140×3+30,

=420+30,

=450 (cm);

A: The ribbon used should be 450 cm.