Answer:
18ft
Step-by-step explanation:
just add all the sides. since it’s a rectangle, you there is 2 sides that’s 3ft long and that are 6ft long. so you would do 3+3+6+6
Notice that

, so

Then taking the positive square root gives

so
and
.
Answer:Go on a graph calolator
Step-by-step explanation:
calul