Pakai cara ya plis ​

Jawaban:

Soal no 1

a. Kll = 4 x 8 = 32 cm

Luas = 8 x 8 = 64 cm²

b. Kll = 2 x 21 + 2 x 15 = 42+30 = 72 cm

Luas = 21 x 15 = 315 cm²

c. Kll = 4 x 15 = 60 cm

Luas = ½ x 18 x 24 = 216 cm²

Soal no 3

L yg tdk diarsir = (L persegi + L jajar genjang) – L yg diarsir

50 = (6×6 + 10×4) – L yg diarsir

50 = (36 + 40) – L yg diarsir

50 = 76 – L yg diarsir

L yg diarsir = 76 – 50

L yg diarsir = 26 cm²