What is the perimeter for a polygon that's area is 20sq. units?

Answer 1

Even if you knew how many sides the polygon has, you still

could not calculate its perimeter with that much information.

Examples:

-- An equilateral triangle with area of 20 has perimeter of 20.3885 .

-- A square with area of 20 has perimeter of 17.889(rounded).

-- A rectangle with area of 20 can have any perimeter more than 17.889 .

4 by 5 . . . . area = 20, perimeter = 18

2 by 10 . . . area = 20, perimeter = 24

1 by 20 . . . area = 20, perimeter = 42

.

.

etc.