Jawaban dan Cara Penyelesaiannya

1. L = a × t

= 16 × 20

= 320 cm²

2. L = a × t

= 20 × 8

= 160 cm²

3. L = ½ (p1 + p2) h

= ½ × (28 + 17) × 12

= 1/(2÷2) × (46÷2) × 12

= 1 × 23 × 12

= 276 cm²

4. L = s²

= 15²

= 225 cm²

L bangun = 3 × 225

= 675 cm²

5. L belah ketupat = a × t

= 18 × 18

= 324 cm²

L trapesium = ½ (p1 + p2) h

= ½ × (18 + 9) × (18 ÷ 2)

= ½ × 27 × 9

= 243/2

= 121 ½ cm²

L bangun = L belah ketupat + L trapesium

= 324 + 121 ½

= 445 ½ cm²

8. L belah ketupat = a × t

= (12×2) × (16×2)

= 24 × 32

= 864 cm²

L trapesium = ½ (p1 + p2) h

= ½ × (24 + 12) × 16

= 1/(2÷2) × (36÷2) × 16

= 1 × 18 × 16

= 288 cm²

L bangun = L belah ketupat + L trapesium

= 864 + 288

= 1.152 cm²

9. L belah ketupat = a × t

= 8 × 6

= 48 cm²

L layang-layang = ½ × d1 × d2

= ½ × (24+4) × 8

= 1/(2÷2) × (28÷2) × 8

= 1 × 14 × 8

= 112 cm²

L bangun = L belah ketupat + L layang-layang

= 48 + 112

= 160 cm²

Semoga Membantu

Maaf karna gk kejawab semua, karna gk tau hehe

#maaf kalo salah