Since c = 2pi r, r = c/2pi
a = pi r^2 = pi(c/2pi)^2 = c^2/4pi
so, plug in your value for c.
A circle has the circumference 28.26cm. What is the area of the circle? use PI as 3.14.
i am confused in how to even solve with the circumference to get the area. Please help
2 answers
Come on guys. Give us the answer