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pesegi panjang
p=38cm
l=9cm
l=p×l
l=38cm×9cm
=273cm**
bangun 2:
persegi panjang
p=(9cm-4cm)=5cm
l=4cm
l=p×l
l=5cm×4cm
=20cm**
luas seluruhnya=b1+b2
=273cm+20cm
=293cm**