Answer:
The perimeter is 89 7/8 or 89.875
Step-by-step explanation:
You can rewrite each fraction in decimal form
20 9/16 is the same as 20.5625, 23 3/8 is 23.375, 24 5/8 is 24.625, and 21 5/16 as 21.3125. Next, you add them. 20.5625+23.375+24.625+21.3125=89.875
