The ratio between the breadth and the length of a flag is 3 : 5.
If the length is 20 cm , what is the perimeter of the flag?
64 cm
Let the breadth be 3x and the length be 5x
5x = 20 ( Given)
⇒x=205=4
Hence, breadth =3x=3×4=12cm
∴ Perimeter of this flag = 2(l+b)
= 2(20 + 12)
= 2(32)
= 64 cm