no 14 yaaaaaaaaaaaaa

K = AD + DC + CB + AB

Karena
AD dan CB sama panjang maka
AD = 2x + 1

32 = 2x + 1 + 2x + 2x + 1 + 3x + 3
32 = 9x + 5
32 - 5 = 9x
27 = 9x
x = 3

AD = 2x + 1
= 2 (3) +1
= 6 + 1
= 7 cm

Jawabannya *c




GL!

K = a + b + c + d
32 = 2x + 2x+1 + 3x+3 + 2x+1
32 = 2x +2x+3x+2x + 1+3+1
32 = 9x + 5
32-5 = 9x
27= 9x
x = 27/9
x = 3

panjang AD = 2x + 1
= 2.3 +1
= 6+1
= 7 cm
c 7 cm