3. Luas segitiga= ½ x a x t = ½ x 30 x 25 = 375 cm²
Luas trapesium = ½ x (jumlah sisi sejajar) x t
= ½ x (30+50) x 25
= ½ x 80 x 25
= 1.000 cm²
Luas total = 375 + 1.000 = 1.375 cm² (d)
4. Luas segitiga = ½ x a x t = ½ x 8 x 7 = 28 cm²
= ½ x ( 20+14) x 6
= ½ x 34 x 6
= 102 cm²
Luas total = 28 + 102 = 130 cm² (c)
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3. Luas segitiga= ½ x a x t = ½ x 30 x 25 = 375 cm²
Luas trapesium = ½ x (jumlah sisi sejajar) x t
= ½ x (30+50) x 25
= ½ x 80 x 25
= 1.000 cm²
Luas total = 375 + 1.000 = 1.375 cm² (d)
4. Luas segitiga = ½ x a x t = ½ x 8 x 7 = 28 cm²
Luas trapesium = ½ x (jumlah sisi sejajar) x t
= ½ x ( 20+14) x 6
= ½ x 34 x 6
= 102 cm²
Luas total = 28 + 102 = 130 cm² (c)
#Semoga membantu (✿^‿^)