Respuesta :

To find the length, divide the area by the width:

Length = 20.5 / 2.5 = 8.2 cm

Answer:

length 8.2cm

Step-by-step explanation:

Given that,

width(w)=2.5cm

area=20.5cm²

length(l)=?

now,

l=area/w

l=(20.5 / 2.5)cm

l=8.2cm