Question

Prisma patrulatera regulata ABCDA'B'C'D' are AB=8√2 cm si AA'=6cm.
Calculati:
a) lungimea diagonalei [AC']; b) aria laterala si volumul prismei;
c) distanta de la varful A la dreapta C' , unde {O} = ACΩBD.

Answer 1

a) AC'= √l²+l²+h² 
AC'= ((8√2)²+(8√2)²+6²) totul sub radical
AC'= √292= 2√73cm
b)Al=Pbaza•h=32√2•6=192√2cm²
V=Aria baza•h=128•6=768cm³
c) d(A,C'....) ????

Answer 2

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