Question

o prisma triunghiulara regulata are l=6 cm si volumul 45 radical 3 cm cub. calculati.
A) inaltimea prismei
B)aria totala

O prisma triunghulara regulata are h=15 cm,iar l= 2 supra 3 X h. calculati.
A) aria laterala a prismei
B) volumul prismei

Answer 1

V=Ab·h
Ab=l²√3/4=36√3/4=9√3
45√3=9√3·h
h=5
At=Al+2Ab
At=3·5·6+2·9√3=90+18√3


h=15
l=10
Al=3·10·15=450
V=Ab·h=25√3·15=375√3