Answer:
5
Step-by-step explanation:
whooops no one had answered u from 50 min!
Count the squares
Side 1:5
Side 2:7
Side 3: 5
Side 4: 7
111
divide by 2 to find the radius
A) 1
2(1+x)= x+3
2(1+1)= 1+3
2×2= 4
4=4
Hence proven
