Answer:
Radius is 13 and Circumferences is 81.64
Step-by-step explanation:
You divide 26 by two to get the radius and multiply 2 time pi times the radius or pi times diameter to get the circumference.
radius=13
Circumference=26pi
Area=169pi
The radius is half the diameter (SP or PR or PQ). The radius is 13
Area= pi(r)^2
r=radius
r=13
pi(13)^2=169pi
circumference=2pi(r)=(pi)d
d=diameter
2(pi)13=26pi
