Tolong dijawab bw brsok mau dikumpul

9. Lpersegi = 26+26 = 676
Lsegi3 = 1/2(9+26+9)(82-26)
= 1/2(44)(56)
= 1232
Ltotal = 676+1232 = 1908 cm kuadrat.

10. Lsegi3 = 1/2(65-16)(34)
= 1/2(1666) = 833
Lpersegi panjang =
18×65 = 1170
Ltotal = 833+1170=2003cm kuadrat.