Tolong Dibantu gan,pakai cara!!Besok Dikumpulin!!!

1. L = p x l
       = 80x 60
      = 4800 cm2
2. L = s x s
  2500 = s2
    s = akar 2500
       = 50 cm

3. L = 1/2 x a x t
       = 1/2 x 60 x 40
       =1200 cm2




Semoga membantu :)
-BNB