plis tolong di jawab,soalnya bsok di kumpul+caranya

Di jajar genjang , atas bawah sama. Kiri kanan sama
Maka bs jg kita rumuskan kell nya sm spt persegi pjg
K = 2(DC + CB)
76 = 2(19+x + 7 + x)
76 = 2(26+2x)
76 = 52 + 4x
76-52 = 4x
24 = 4x
x = 24/4 = 6

Dit. DC dan CB
DC = 19+x = 19+6 = 25 cm
CB = 7 + x = 7 + 6 = 13 cm

keliling jajar genjang = 2 x (DC + CB)
76 = 2 (19 + x + 7 + x)
76 = 2 (26 + 2x)
76 = 52 + 4x
76 - 52 = 4x
24 = 4x
x = 24 : 4
x = 6 cm

Dc = 19 + x = 19 + 6 = 25 cm
CB = 7 + x= 7 + 6 = 13 cm