Tolong jwb Pleaseee

Diketahui :
- Panjang = (2x) m
- Lebar = (x) m
- Keliling = 54 m

Ditanya : Panjang = ....?

Penyelesaian :
- Panjang :
K = 2(p + l)
54 = 2(2x + x)
54 = 2(3x)
54 = 6x
x = 54 ÷ 6
x = 9 m

p = 2x
p = 2 × 9
p = 18 m

Jawaban : D. 18 meter

Maaf Kalau Salah

K = 2(p+l)
54 = 2(2x + x)
54= 4x + 2x
54 = 6x
6x = 54
x= 54 : 6 = 9
x=9

panjang diketahui = 2x = 2 x 9 = 18 meter