Can someone help me asap pls?

Actually Welcome to the Concept of the Trigonometry.

so here, we gonna use the cosine ratios.

so here, we also use the Pythagoras Theorem.

so we here, we get

h= 1 ,

step-by-step explanation:

given that there are two triangles j'k'l' and jkl>

the former is got by dilating the second one.

when drawn on a grid, (graph paper) coordinates of vertices of first triangle is

(6,12)j, (9,6)k and (12,9)l

side jk has length = distance between j and k

=

side j'k'=distance between j' and k'

=

ie j'k'l' has sides 1/3 of that of corresponding sides of jkl.

hence scale factor of 1/3 is used to get j'k'l'from jkl

r = 78539458390583095803458309458039485093485 or just 3

step-by-step explanation: