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L1 = 10 x 36
= 360
L2 = 1/2 (36+24) x 18
= 1/2 x 60 x 18
= 30 x 18
= 540
360 + 540
= 900
= p × l
= 36 × 10
= 360 cm kuadrat
Tinggi trapesium
= 28 - 10
= 18 cm
L. trapesium
= jumlah sisi sejajar × tinngi : 2
= (24+36) × 18 : 2
= 60 × 18 : 2
= 1080 : 2
= 540 cm kuadrat
L. bangun gabungan
= L. persegi panjang + L. trapesium
= 360 + 540
= 900 cm kuadrat
semoga membantu :)