Question

Va rog ajutati ma repede

Answer 1

Explicație pas cu pas:

AR- linie mijlocie=SO/2=2

A(SORA)=(B×b×h)/2= (SO×AR×AS)/2=(4×2×3)/2=12

A(CAR)= (C1×C2)/2= (CA×AR)/2= (3×2)/2= 3

A(SAO)= (C1×C2)/2= (SA×OS)/2= (3×4)/2= 6

A(AOR)= A(SORA)-A(SAO)= 12-6= 6

A(AOC)= A(CAR)+ A(AOR)= 3+6= 9