Question

Fie ABCDA'B'C'D' o prisma patrulatera regulata care are aria bazei 9 cm ² si aria laterala de 36√2 cm².Aflati: a) Aria totala b) inaltimea c) d( D' , BC) d) volumul

Answer 1

a)At=Al+2Ab
Al=36√2+2×9
Al=36√2+18
Al=54√2 cm²

b)Al=Pb×h             Pb=l²=3²=9   l=3 cm
Al=3×12√2                  3×cat =36    3×12=36
Al=36√2 cm²

h=12√2 cm

d)V=Ab×h
V=9×12√2
V=108√2 cm²

Sper ca te-am ajutat!!