lanjutan gambaran tadi

5.L A = 1/2 × d1 × d2
= 1/2 × 12 × 24
= 144

L B = 1/2 × d1 × d2
= 1/2 × 14 × 22
= 154

jadi, 144 < 154

6. L = 1/2 × d1 × d2
156 = 1/2 × 24 × d2
156 = 12 × d2
= 156 ÷ 12
= 13 cm

7. L = 1/2 × d1 × d2
= 1/2 × 25 × 8
= 100 cm

8. L = 1/2 × jumlah sisi sejajar × tinggi
= 1/2 × ( 4 + 6 ) × 5
= 1/2 × 10 × 5
= 25 cm

9. panjang KO = MO

berarti, nilai KO adalah 12 cm

10. maaf gak paham

11. L A = 1/2 × jumlah sisi sejajar × tinggi
= 1/2 × ( 13 + 19 ) × 17
= 1/2 × 32 × 17
= 272 cm

L B = 1/2 × jumlah sisi sejajar × tinggi
= 1/2 × ( 15 + 17 ) × 16
= 1/2 × 32 × 16
= 256 cm

jadi, 272 > 256

12. T = L × 2 ÷ ( jumlah sisi sejajar )
= 210 × 2 ÷ ( 11 + 9 )
= 420 ÷ 20
= 21 cm

13. L = 1/2 × d1 × d2
= 1/2 × 50 × 30
= 750 cm

14. L = 1/2 × jumlah sisi sejajar × tinggi
= 1/2 × ( 18 + 16 ) × 14
= 1/2 × 34 × 14
= 238 cm

15. L = 1/2 × jumlah sisi sejajar × tinggi
= 1/2 × ( 16 + 20 ) × 15
= 1/2 × 36 × 15
= 270 cm

16. L = 1/2 × d1 × d2
= 1/2 × 12 × 7
= 42 cm

17. L = 1/2 × d1 × d2
= 1/2 × 38 × 19
= 361 cm