Help with shape measurements! Medal to best answer. Thanks for the help!!

Question will be posted below.

Question

Help with shape measurements! Medal to best answer. Thanks for the help!!










Question will be posted below.

beccab003 · Answer

If RZX = RST, calculate the perimeter of RST.

beccab003 · Answer

I just don't understand how I am supposed to find the measurements of the other line lengths because I tried and the numbers came out weird.

beccab003 · Answer

@Directrix @jim_thompson5910 @DanJS

jim_thompson5910 · Answer

do you see what the length of YX and WT must be?

beccab003 · Answer

yeah, 9 and 15. I get that part.

danjs · Answer

$$\frac{ 21 }{ 21+ZS } = \frac{ 9 }{ 15 }$$

is that legal to do

jim_thompson5910 · Answer

that's valid DanJs

beccab003 · Answer

I tried to use that kind of method to solve this but without the left side part that you wrote.

danjs · Answer

if you solve that ZS=14

then use that in a new ratio

danjs · Answer

$$\frac{ 21 }{ 21+14 } = \frac{ 30 }{ 30+XT }$$

danjs · Answer

then you have all the parts to add up

beccab003 · Answer

sweet! I know how to do the problem from there!!!

beccab003 · Answer

it's 115!!! I just didn't know how to get that first number...THANKS!!

danjs · Answer

welcome