Cannot be determined.
Area or perimeter should be provided to calculate the lenght but its not.
s is the length and w is width which the equation is 2s+2w=P
<em><u>im not sureeeeeeeeeeeeeeeeeeeeeeeee</u></em>
The formula for density = number/ area
In this case number=20
area = 5m^2
Density = 20/5=4 mice per m^2
The right answer is <span>A. 4 per m2</span>
