Tolong di bantu ya no 39

8+10+5+9+19+3= 18+14+22
= 32+22
54cm

K□ = 2s + 2s
K□ = 2(10) + 2(8)
K□ = 20 + 16
K□ = 36

K■■ = 2p + 2l
K■■ = 2(9) + 2(3)
K■■ = 18 + 6
K■■ = 24

Kbangunan = K□ + K■■
Kbangunan = 36 + 24
Kbangunan = 60