.tolong ya nanti bintang 5+++++++++​

Jawaban:

p-l = 9cm

p = 9 + l

K = 2((9+l) + l)

58 = 2(9 + 2l)

58 = 18 + 4l

-4l = 18 – 58

-4l = -40

l = 10cm

p = l+9

p = 10 + 9

p = 19cm

L = p × l

= 19 × 10

= 190cm²