Answer:
i think it is 1/100
Step-by-step explanation:
4/20^2 add all the marbles number together than put the amount of orange marbles on top of it so it is 4/20 than square it
The perimeter would be 3/8+3/8+4/5+4/5= 2.35 or 2 7/20 square foot.
I hope this helps.
YOU'RE WELCOME :D
Use a=

r^2 (r represents your radius of 4 feet)

(4^2)
Answer = 16

^2
Well, you would find the perimeter adding up all of the sides. Would you please tell us what each of the sides are, or what sides are what? :)