Question

~please only answer if you know for sure~
-Thank you-

Answer 1

JK is similar to PQ
KL is similar to QR

Make a proportion

$\sf{ \frac{JK}{PQ} = \frac{KL}{QR} }$

Plug in the numbers

$\sf{ \frac{36}{6} = \frac{24}{QR} }$

Cross multiply

$\sf{36\times QR= 6 \times 24}$

Solve for QR

$\sf{ QR=4}$

So your final answer is 

$\boxed{\bf{4~centimeters}}$

Answer 2

I pretty sure it would be 4 centimeters.

Because side JK (I find that really funny) is 36 centimeters, while side PQ is 6 centimeters. I multiplied that by 6, to get 36 and divided 24 by 6 which is 4 centimeters. Hope this helped!