minta bantuannya ini ya?

23.20cm+10cm+10cm+20cm+10cm+30cm+25cm=30cm+30cm+30cm+25cm=g
90cm+25cm=115cm

25.x= TR
[tex] \frac{12}{9 + 11} = \frac{9}{9 + x} \\ 12(9 + x) = 9 \times 20 \\ 36 + 4x = 60 \\ 4x = 24 \\ x = 6[/tex]
24.D
22.
[tex] \frac{1}{2} \times (4 - 1) \times (5 - 1) = \frac{1}{2} \times 3 \times 4 = 6[/tex]