1. circonferenza   circle   diameter   sphere   circumference   Hint Half-n-half Clue   2. diametro   cube   side   curve   diameter   Half-n-half Clue   3. cubo   cube   cone   volume   semicircle   Half-n-half Clue   4. volume   point   side   circle   volume   Half-n-half Clue   5. superficie   circle   semicircle   area   cylinder   Half-n-half Clue   6. semicerchio   diameter   side   semicircle   curve   Half-n-half Clue   7. cerchio   diameter   radius   angle   circle   Half-n-half Clue