Answer:
Step-by-step explanation:
j=k+4
k=3r
j=3r+4
j+k+r=46
3r+4+3r+r=46
7r+4=46
7r=42
r=6, since k=3r
k=18, since j=k+4
j=22
j,k,r=22,18,6
2,3,5
Let me know if i'm wrong
28cm
2L+2W=
14+14=28
(It’s a square)
Answer-
-8