OpenStudy (anonymous):

HI

4 years ago
OpenStudy (mathstudent55):

By looking at the figure, we see 2 triangles with some lengths marked. The side that measures 10 cm corresponds to which side in the other triangle?

4 years ago
OpenStudy (mathstudent55):

Great. The side of 14 cm corresponds to which side in the other triangle?

4 years ago
OpenStudy (mathstudent55):

Yes. That's good. We have 10 cm corresponds to 22 cm and 14 cm corresponds to x The lengths of the sides of similar triangles are in proportion. That means we can write a proportion with these lengths: 10 is to 22 as 14 is to x $$\dfrac{10}{22} = \dfrac{14}{x}$$ Now we can use cross multiplication to find x.

4 years ago
OpenStudy (mathstudent55):

Use cross multiplication. |dw:1389039352792:dw|

4 years ago