jawab ya semuanya pake caranya lengkap!

a AB = CD sisi persegi
8x - 32 = 5x + 16
8x - 5x = 16 + 32
3x = 48
x = 48/3
x= 16 cm
b.pj AB = 8x - 32
= 8( 16) - 32
= 128 - 32
= 96
c.pj CD = 5 x +16
= 5(16) +16
= 96
d.luas persegi = sisi xsisi
= 96 x96
' '' = 9212 cm^2
kll persegi = 4 sisi
= 4x 96
= 385