The radius of the circle would be 12
2(6x+20) +2(8x-16)=180
12x+16x+40-32=180
28x+8=180
X=180-8/28=6
I think so my calculation may be wrong )
Look at the pictures! :)
HOPE THIS HELPED! HAVE A GREAT DAY! :)
every similar line means that they have the same value
x=8
y=10
go look for a way to find the last side in the small rectangle that has x and y