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=s×s
=9×9=81
L2=(jumlah panjang sejajar)t
-----------------------------------
2
=(15+9)×11
--------------
2
=24×11
--------
2
=264÷2=132
L.total=L1+L2
=81+132
=213cm^2
(^)=pangkat
tandai sebagai yang terbaik yaa