1. volume   side   circle   volume   semicircle   Hint Half-n-half Clue   2. cubo   square   cone   sphere   cube   Half-n-half Clue   3. curva   curve   semicircle   perimeter   diameter   Half-n-half Clue   4. punto   point   semicircle   rectangle   circumference   Half-n-half Clue   5. diametro   cube   perimeter   circumference   diameter   Half-n-half Clue   6. superficie   radius   area   square   cube   Half-n-half Clue   7. circonferenza   triangle   cone   perimeter   circumference   Half-n-half Clue