Question

Va rog!!! Pana la ora 11:00!!!
CE este paralel cu AD!!!​

Answer 1

CE=AD=12

DC=AE=12

EB=32-AE

EB=32-12=20

BC=16

Fie CM⊥EB

$CM=\frac{CE\times BC}{EB} =\frac{12\times 16}{20} =9,6$

$A_{ABCD}=\frac{44\times 9,6}{2} =211,2cm^2$

DE=BC=16

DE⊥CE (CE secanta, ∡DEC=∡BCE)

$A_{AECD}=DE\times EC=16\times12=192$

$A_{DEBC}=CE\times DE=12\times 16=192cm^2$