panjang dan lebar sebuah persegi panjang berbanding 9:5 jika panjangnya 36cm tentukan kelilingnya

Jb :

Keliling 1
= 9 / ( 9 - 5 ) x 36
= 9/4 x 36
= ( 36 ÷ 4 ) x 9
= 9 x 9
= 81 cm

Keliling 2
= 5 / ( 9 - 5 ) x 36
= 5/4 x 36
= ( 36 ÷ 4 ) x 5
= 9 x 5
= 45 cm

Jumlah Keliling
= 81 cm - 45 cm
= 36 cm

Sorry If Wrong
I Hope This Helps

Panjang = 9 = 36cm
1 = 36:9=4cm
Lebar = 5 = 4x5 = 20cm
Keliling =2x(36+20)= 2 x 56 = 112cm

Maaf ya kalau salah ^.^