apa jawaban soal no 27 - 30 pake caranya

28.)
luas persegi klmn
=s²
=16×16
=256cm²
luas persegi pqrs
=s²
=25×25
=625cm²
jadi selisinya (625-256=369cm²)

29.)
=(39×39)-(16×16)+(34×34)-(11×11)
=1521-256+1156-121
=1265+1035
=2300

30.)d.j=5, a=3, s=4

maaf kalo sala