Answer :
Perimeter = is the sum of the lengths of a geometrical figure.
In this case we have a rectangle, so in order to calculate the perimeter we must sum the 4 sides of the rectangle.
The sides are:
b = 10
h = 5
So the perimeter is:
[tex]P=b+b+h+h=10+10+5+5=30[/tex]We sum twice the base and the height because they appear twice in the rectangle!