Here are 2 circles. The smaller circle has radius *r*, circumference *c*, and diameter *d*. (I'm confused about how to explain this problem so I need some help.)

GAMEMASTERX40 May 22, 2020

#1**+4 **

Well then everything must be increased by k times on the larger one.

Why?

It says "the larger circle is a dilation of the smaller circle by a factor of k", which means the larger circles is k times larger. Which means that all parts of it are k times larger.

If the smaller circle's circumference is 2πr, we have 2πr * k = 2πR.

hugomimihu May 22, 2020

#1**+4 **

Best Answer

Well then everything must be increased by k times on the larger one.

Why?

It says "the larger circle is a dilation of the smaller circle by a factor of k", which means the larger circles is k times larger. Which means that all parts of it are k times larger.

If the smaller circle's circumference is 2πr, we have 2πr * k = 2πR.

hugomimihu May 22, 2020