Luas segitiga = 1/2 × a × t
= 1/2 × 40 × (36-20)
= 1/2 × 40 × 16
= 320 cm²
Luas persegi panjang = p × l
= 40 × 20
= 800 cm²
Luas gabungan = 320 + 800 = 1.120 cm²
atau , bisa juga :
Luas trapesium = 1/2 ( a+b) × t
= 1/2 (20+36) × 40
= 56 × 20
= 1.120 cm²
insyaallah. semoga membantu
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Luas segitiga = 1/2 × a × t
= 1/2 × 40 × (36-20)
= 1/2 × 40 × 16
= 320 cm²
Luas persegi panjang = p × l
= 40 × 20
= 800 cm²
Luas gabungan = 320 + 800 = 1.120 cm²
atau , bisa juga :
Luas trapesium = 1/2 ( a+b) × t
= 1/2 (20+36) × 40
= 56 × 20
= 1.120 cm²
insyaallah. semoga membantu