Răspunsuri

2014-10-29T12:48:17+02:00
Intr-un triunghi dreptunghic oarecare aria este 

cateta1 x cateta2 / 2=

12.4x8.5/2
Aria = 105.4/2
Aria = 52.7 cm patrati
2014-10-29T13:09:46+02:00
M<B =90 °⇒ ΔABC dreptunghic
A(aria)=C1·C2/2⇒12,4 cm·8,5 cm/2=105,4 cm²/2=52,7cm²