kak please jawab no 23

sisi miring =
[tex] \sqrt{ {12}^{2} + {9}^{2} } = \sqrt{144 + 81} = \sqrt{225} = 15[/tex]
keliling =15+24+15+9+24+9=96 cm
jawaban A

Sisi miring² = 12² + 9²

x² = 144 + 81

x² = 225

x =√ 225

x = 15

Kel = 42 + 30 + 24= 96 cm (A)