perbandingan p&l persegi panjang 4:3.Selisihny 6cm.berapakah kelilingny.bantu gaes

P : l = 4 : 3
p = 4/3 l

selisih persegi panjang = 6 cm
p - l = 6
4/3 l - l = 6
1/3 l = 6
l = 6 × 3
l = 18 cm

p = 4/3 (18) = 24 cm

Keliling
K = 2(p + l)
K = 2 (24 + 18)
K = 2 (42)
K = 84 cm