kak tolonglah bantu, nomor 2,3,5 pakek caranya ya kak biar aku mudeng

2. Keliling = 2 (p+l)
72 = 2 ( (x+6) + (x-2) )
72 = 2x + 16 + 2x -4
72 - 16 + 4 = 4x
60 = 4x
15 = x
Luas = (x+6) (x-2)
= (15+6) (15-2)
= 21 × 13
= 273
3. Luas = 20x × 15
10800 = 300x
36 = x
Panjang papan = 20x = 20×36 =720
5. Maaf no.5 ndak tahu