Răspunsuri

2014-02-25T21:58:38+02:00
At (Aria totala) = Al (Aria laterala) + Ab (Aria bazei)
Pb (perimetrul bazei) = 4l 
16 = 4l --> l= 16/4 --> l=4 
Ab = latura la patrat --> Ab = 4 la patrat --> Ab = 16 
Al = 4l*ap (apotema piramidei) /2
Al= 4*4*5/2
Al= 16*5/2
Al= 8*5 --> Al= 40 cm patrati
V= Ab * inaltimea /3
V= 16*9/3
V= 16*3 --> V= 48 cm cubi 
2014-02-25T22:01:08+02:00
Alat= Pb*ap/2  = 16*5/2= 40 cm2
Atot= Ab +A lat= 16+40 = 56 cm2
V=(Ab*h)/3 = (16*9)/3= 48 cm3