Respuesta :

Zensu

Answer:

65 units

Step-by-step explanation:

Assume y is the breadth of the rectangle, since length is given.

y = breadth = 21 ÷ 2 = 10.5 units

length = 2(10.5) + 1 = 22 units

Therefore,

Perimeter = 2 (length + breadth)

= 2 (22 + 10.5)

= 65 units