Question

what is the circumference of a circle if the radius of the circle is 2.2 in terms of pi? a) 1.1 pi b) 1.21 pi c) 2.2 pi d) 4.4 pi

Answer 1

Cicumference =  Dπ  or  2rπ

thus if r = 2.2 
then C  = 2 (2.2)π
             =  4.4π

D is the answer