The perimeter of a park is 20.1208 km.

side a is 4.0491 km shorter than side b.

how long are sides a and b?

5,000 of coarse because times them both and get ur answer

Given that the park is a rectangle and has 4 sides
side a = 3.00565 side b= 7.05475
i got this by using this equation:
2 (x+4.0491) + x = 20.1208 to solve first divide each side by 2
(x+4.0491) + x = 10.0604
then combine x's
2x+4.0491=10.0604
then subtract 4.0491 on each side
2x= 6.0113
then divide each side by 2
×= 3.00565
that gives you side A
to find side B take side a + 4.0491
3.00565 + 4.0491 = 7.05475
and that is side B

Where is your question?