Răspuns:
Explicație pas cu pas:
a3=6√6 cm
a)a3=l3√3/6 l3√3/6=6√6 l3=36√2 cm
b)A3=l3²√3/4=36²×2√3/4=36x18√3 cm²=648√3 cm²
c) a3=R/2 R=12√6cm
A4=l4² l4=R√2=12√6√2=24√3 cm
A4=24²x3==1728 cm²
d)A6=3R²√3/2=3×12√6×√3/2=3x12x3x√3/2=9x6√3=54√3 cm²
