Could you plz help me. I don't get how to get the answer. If you could help me it would be a blessing come tru. Plz help!! I will also mark you !

Answer:
so you examine the circle and you determine the width
w=width
you multiply it by 4
then subtract by 10
Defenition of Width
The distance from side to side.
Example: the width of this door is 80 cm.
Step-by-step explanation: