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b. Panjang BC = 8
c. Keliling Trapesium ABCD = 44
d. Luas Trapesium ABCD = 124
ed=akar 48=4 akar 3
bc=ad=8 cm
keliling=10+8+8+4+10+4=34
luas=1/2*a+b*t=14*4akar3=56 akar 3