Question

Cara nya gimana ya no 1dan5

Answer 1

1.Δ = 1/2 x a x t = 1/2 x 3 x 3 = 4,5 m2
  persegi panjang =p x l = 10 x 3 =30 m2
 Δ= 1/2 x a x t = 1/2 x 20 x 10 = 100 m2
Luas =134,5 m2

5. luas = 2 x luas trapesiun
            = 2 x (1/2 x (a+b) x t)
            = 2 x (1/2 x (10 + 5) x 5)
            = 2 x ( 1/2 x 15 x 5)
            = 2 x 37,5
            = 75 cm2