Verified answer

Answer:

length = 18cm , breadth = 6cm

Step-by-step explanation:

let breadth be x ,

then length is 3x

substitute in the formula of perimeter of rectangle

2(l + b) = 48 cm

2(3x + x) = 48

2 × 4x = 48

8x = 48

x = 48÷8

x = 6

therefore , length = 3x = 3 × 6 = 18

breadth = x = 6 .

Answer :

Step by step explanation : let the length and breadth be x

[tex]2(3x + x ) = 48 cm[/tex]

[tex]2 \times 4x = 48cm[/tex]

[tex]4x = 48 \div 2 = 24[/tex]

[tex]x = 24\div 2 = 12[/tex]

[tex]3x = 3 \times 12 = 36 [/tex]

[tex]1x = 1 \times 12 = 12[/tex]