Question

Trapez abcd,A=D=90 de grade
Ab ||cd;bd perpendicular cu bc
Ab=6 cm
Ad=12
Aflati Bd,perimetrul si aria abcd

Answer 1

aria ABCD=6*12=72$cm^{2}$
perimetru= 12*2+6*2=36 cm
BD=$\sqrt{12^{2}+6^{2} }$=6$\sqrt{5}$