20 inches (5x4)
4*2.5 = a perimeter of 10 inches
A pentagon is a 5-sided figure, and the perimeter is the sum of the lengths of all the sides. A pentagon with 15-inch sides, will have 5 x 15 inches = 75 inches as its perimeter.
Perimeter is the measurement of all sides of a figure. For example, if you have a rectangle that has 2 sides of 4 inches long and 2 sides of 8 inches long, the perimeter is the total of all sides, which in this case is 24 inches.
Add all the sides up
The perimeter is the sum of the lengths of all the sides of a figure. If there are only two sides, it is their sum. In this case it would be 16 inches.
A pentagon is a 5-sided figure, and the perimeter is the sum of all the sides. If a pentagon has sides of 6 inches, it has 5 x 6 inches = 30 inches for a perimeter.
You determine the perimeter of an object by adding up the lengths of all sides.
Add up all the sides of the object you're trying to find the perimeter for.
44"
To find perimeter you would add all of the sides of your object together to get the final result.
Add all the sides up
add all the sides together