Question

In trapezul dreptunghic ABCD , AB||CD si m(<A)=m(<D)= 90 grade . Daca AB= 4cm si CD= 9 cm , calculati aria trapezului ABCD.

Answer 1

B+b*h/2
AD=4*2=8cm(cred)
CD+AB*AD/2=9+4*8/2=13*8/2=104/2=52cm patrati
A trapezului=52 cm patrati

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