jawab dengan cara y kak

8.
[tex]luas=2 \: ((pl) + (pt) + (lt)) \\ \: \: \: \: \: \: \: \: \: = 2 \: (( 35\times 22) + (35 \times 18) + (22 \times18 )) \\ \: \: \: \: \: \: \: \: \: = 2 \: (770 +630 + 396) \\ \: \: \: \: \: \: \: \: \: = 2 \: (1796) \\ \: \: \: \: \: \: \: \: \: = 3592 {cm}^{2}[/tex]

9.
[tex]luas = 6 \times {s}^{2} \\ \: \: \: \: \: \: \: \: \: \: = 6 \times {22}^{2} \\ \: \: \: \: \: \: \: \: \: \: = 6 \times 484 \\ \: \: \: \: \: \: \: \: \: \: = 2904 {cm}^{2} [/tex]

Semoga membantu

8.
Lp = 2 (pl + lt + pt)
Lp = 2 [(35)(22) + (22)(18) + (35)(18)]
Lp = 2 [ 770 + 396 + 630 ]
Lp = 2 ( 1796 )
Lp = 3592 cm²

9.
Lp = 6s²
Lp = 6 (22)²
Lp = 6 (484)
Lp = 2904 cm²