Question 204284
<font face="Times New Roman" size="+2">


The circumference of a circle is *[tex \Large C = 2\pi r], therefore the radius of a circle, given the circumference is *[tex \Large r = \frac{C}{2\pi}].


The area of a circle is *[tex \Large A = \pi r^2].


Substituting


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ \ \ A = \pi \left(\frac{C}{2\pi}\right)^2]


Substitute the given value of *[tex \Large C] and then do the indicated arithmetic.


John
*[tex \Large e^{i\pi} + 1 = 0]
</font>