DECA=10, decagon = 10 sides.
since each side is 1.8 long, all 10 sides will be 10*1.8 or 18 units long, so that'd be the perimeter then,
Answer:
16
Step-by-step explanation:
brainliest plss
I'm sorry but do you ha e a picture of a flowchart
we are given

Since, we have to solve for w
so, we will isolate w on anyone side
Multiply both sides by 5



so,
option-D..........Answer