Here we go !!
Since it's a regular pentagon, all it's sides are equal so let's solve for x






now let's find the measure of each side, i.e





perimeter = 5 × side length ( for a regular pentagon )


B i got u u got any more i can help you
Answer:PQ
Step-by-step explanation: __
Line up the two: BCDE
OPQR
If they are the same which is equal to the same thing?
*hint* the two middle letters.
Your answer is 18 :)
work:
pi(2)d
pi(72)
72/2=36=d
2r=d
36/2=18=r