Question

I think the answer to this is a?
Triangle PQR is similar to triangle ABC in the figure below.
http://learn.flvs.net/webdav/assessment_images/educator_geometry_v14/pool_Geom_3641_0309_12/image0024e246b98.jpg
What is the perimeter of triangle ABC?

10.5 inches

39.9 inches

42.0 inches

60.65 inches

Answer 1

10.5 is the length AC

perimeter = 10.5 + 17.5 + 14 = 42

Answer 2

YAY I was right?

Answer 3

since both triangles are similars so the ratios of their sides should be equal
let the unknown side of ABC is x
3/x=4/14
x=10.5
and perimeter is sum of all sides so
10.5+17.5+14=42

Answer 4

yup... ! guess you're setting up the fractions correctly :)

answer is c

question is asking for perimeter. not the length AC

Answer 5

ohhhhh duh. Thanks!

Answer 6

np :)