VO=11-5=6 cm
apotema piramidei=√(6²+4²)=√(36+16)=√52=2√13 cm
Vblat=8x8x5=320 cm³
Vpiramida=8x8*6/3=128 cm³
Vprajitura=320+128=448 cm³
Alaterala ciocolata =Pb*ap/3=8*4*2√13/2=32√13 cm²
c) 1 kg=1000 g
1000 g:200 g/prajitura=5 prajituri
30 lei/kg : 5 prajituri/kg=6 lei/prajitura
