Odpowiedź:
9) Pole = [tex]\frac{axh}{2}[/tex] = [tex]\frac{3x8}{2}[/tex] = [tex]\frac{24}{2}[/tex] = 12 cm²
10) a = 60cm, b = 140 cm, h = 60 cm
Pole = [tex]\frac{(a+b)xh}{2}[/tex] = [tex]\frac{(60+140)x60}{2}[/tex] = [tex]\frac{200x60}{2}[/tex] = [tex]\frac{12000}{2}[/tex] = 6000 cm²
