Lets assume its equal to 14 cm. Area p r 2 displaystyle text areapi r 2 to find the area. C 2 227 7.
C 2 p R 2 p 14 879646 cm.
A pr2 or A p d22 where p is the mathematical constant approximately equal to 314 r is equal to the radius and d is the diameter. Area of a circle in terms of circumference. C pd or C 2pr Where p is a constant whose value is 31415. D 2 R 2 14 28 cm.