Jawab yg no 8 ajaa Yaa please

P= 16 cm
l = 12 cm

Maka panjang diagonal adalah:

x² = 16² + 12²
x² = 256 + 144
x = √400
x = 20 cm

Jawaban C...

[tex] x = \sqrt{ {16}^{2} + {12}^{2} } \\ x = \sqrt{256 + 144} \\ x = \sqrt{400 } \\ x = 20[/tex]