1. sfera   triangle   cube   sphere   volume   Hint Half-n-half Clue   2. cilindro   side   cylinder   triangle   circle   Half-n-half Clue   3. diametro   cylinder   perimeter   diameter   cube   Half-n-half Clue   4. quadrato   perimeter   line   radius   square   Half-n-half Clue   5. linea   diameter   volume   curve   line   Half-n-half Clue   6. circonferenza   perimeter   circumference   diameter   triangle   Half-n-half Clue   7. cono   cone   line   circle   point   Half-n-half Clue