Tolong dijawab dua duanya(͡° ͜ʖ ͡°)

15][
L = (a + b) x t : 2
L = (65 + 35) x 20 : 2
L = 100 x 10
L = 1.000 cm² (A)

16][
L = d1 x d2 : 2
L = 28 x 40 : 2
L = 28 x 20
L = 560 cm² (B)

15. L trapesium = 1/2 x (DC + AB) x t
= 1/2 x (35 + 65) x 20
= 1/2 x 100 x 20
= 1000 cm^2 (A)

16. d1 = FH = 40 dm
d2 = GI = 28 dm
L layang" = 1/2 x d1 x d2
= 1/2 x 40 x 28
= 560 dm^2 (B)

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