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Sebuah trapesium mempunyai panjang sisi sejajar 20 cm dan 12 cm, serta tingginya 8 cm. Hitunglah luas trapesium tersebut!

Rani Maharani

30 Mei, 2023

Soal:

Jawaban

Diketahui:

Panjang sisi sejajar trapesium: 20 cm dan 12 cm

Tinggi trapesium: 8 cm

Ditanyakan:

Luas trapesium

Rumus:

Luas trapesium = (jumlah panjang sisi sejajar × tinggi) ÷ 2

Penyelesaian:

Substitusikan nilai-nilai yang diketahui ke dalam rumus luas trapesium.

Luas trapesium = (20 cm + 12 cm) × 8 cm ÷ 2

Dalam hal ini, penjumlahan 20 cm dan 12 cm menghasilkan panjang sisi sejajar yang sebenarnya, yaitu 32 cm.

Luas trapesium = 32 cm × 8 cm ÷ 2

Kemudian, lakukan operasi perkalian dan pembagian.

Luas trapesium = 256 cm² ÷ 2

Luas trapesium = 128 cm²

Jadi, luas trapesium tersebut adalah 128 cm²."

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