Question

Pierce draws a circle with a radius of 3 centimeters. Gianna draws a circle
with a radius that is twice as long as the radius of Pierce's circle. How will
the circumference of Gianna's circle compare with the circumference of
Pierce's circle? Lesson 8-5
The circumference of Gianna's circle is ___ times the circumference of
Pierce's circle.

Answer 1

Twice as large.

Because circumference C = 2πr, Pierce's is 2π(3) = 6π and Gianna's is 2π(6) = 12π, and 12π ÷ 6π = 2.