Question

A chain fits tightly around two gears as shown. What is the radius of the smaller gear? Round your answer to the nearest tenth.

Answer 1

Image

Answer 2

similar triangles

Answer 3

Huh?

Answer 4

extend the 2 lin es horizontally

Answer 5

forward until the two lines meet at a point

Answer 6

How would I find out though?

Answer 7

this is what @him1618 is trying to tell...

Answer 8

then the smaller triangle and the big triangle are similar

Answer 9

How would I find out how long the the triangle ends up being? I understand it's going down now, but how would I come up with the specs for the smaller triangle?

Answer 10

three angles are same and so theyre similar

Answer 11

The three angles?

Answer 12

oh no forget it

Answer 13

first remember that any tangent to the circumference forma a 90 degree angle with the radius