Respuesta :

7493

Answer:

80 m.

Steps: perimeter =4 x side

=4x20=80m

Dead3ill

Answer:

40 m

Step-by-step explanation:

Formula of perimeter of a rectangle = 2(l + b)

where l = Length & b = Breadth

According to the question ,

Sum of length & breadth = l + b = 20m

Perimeter = 2(l + b) = 2 × 20 = 40m