Răspuns:
Explicație pas cu pas:
2)In ΔVOO OP=AB/2=8
VO=6 VP=ap= √64+36=10
Ab=l²=16²=256cm²
Al=4×VP×AB/2=2×10×16=320 cm
At=Ab+Al=256+320=576 cm²
3)VB=20 VP=16
in ΔVBP BP²=VB²-VP² BP²=(20-16)(20+16)=4×36 BP=12 BC=24
Ab=24²=576 cm²
Al=4×VP×BC/2=2×16×24=768 cm²
At=1344cm²
4)VB=8√3 AB=BC=16 BP=8
in ΔVBP VP²=VB²-BP²=64×3-64=64(3-1)=64×2 VP=8√2
Ab=BC²=16²=256 cm²
Al=4×VP×BC/2=2×8√2×16=256√2 cm²
At=256+256√2=256(√2+1) cm²