Question

(Geometry) What is the circumference of the circle below in terms of Pi?

A) 1.1 Pi
B) 1.21 Pi
C) 2.2 Pi
D) 4.4 Pi
E) 1.12 Pi

Answer 1

C=2×2.2×π ..................

Answer 2

I would think D because the formula for the circumference of a circle is 2*Pi*R, so using 2*R*Pi, due to the commutative property of multiplication it can be rearranged, therefore 2 times the radius, 2.2, equals 4.4, times pi, so D