Question

what is the perimeter of the shape made from the file datatest4.txt whose contents are given below
-3,9
-8,7
-12, 4

-6, -2

-4, -6

2, -8

6, -5

10, -3

8, 5

4, 8

Answer 1

Given :  Points of a shape

to find : Perimeter of shape

Solution:

Distance between two point is given by √ (( x2 - x1)² + (y2 - y1)²)

-3 9

-8 7                √29

-12 4                 5            

-6 -2               6√2

-4 -6               2√5

2 -8                2√10  

6 -5                5

10 -3                 2√5

8 5                 2√17

4 8                 5

-3 9                 5√2

add all  above to get perimeter

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