Question

ABCDA'B'C'D' - prisma triunghiulara
AA'- 2 radical din 3 
V- 24 cm . 
Aflati : 
a) Pb = ? 
b) Al = ?
c) At=? 

Answer 1

V=Ab * h
24cm=Ab * $2 \sqrt{3}$
Ab=24/2v3
Ab=12/v3   -rationalizam
Ab=4v3 cm^2
Ab=l^2v3/4
l^2=Ab*4/v3
l^2=4v3*4/v3
l^2=16
l=v16=4 cm
Pb=3l
=3*4
=12cm
Al=Pb*h
Al=12*2v3
=24v3
At =Al + 2Ab
=24v3+ 2 * 4v3 cm^2
=24v3+8v3cm^2
=32 cm ^2
v -radical
cm^2- cm la a doua
l^2- latura la a doua