Question

Tolong jwab no 3 aja , besok disetor

Answer 1

3. (x+2)cm dan (x-1)cm
rumus keliling=
2(x+2)+2(x-1)
2x+4+2x-2
=4x+2

Answer 2

3.)Diketahui pjg = (x+2)
lebar= (x-1)
Ditanya K=...?
Jawab : K= (2×P)+(2×L)
=2(x+2)+2(x-1)
=2x+4+2x-1
=4x+3
Jdi,keliling persegi pjg tersebut adl 4x+3