Luas : s × s
Luas : 30 × 30
Luas : 900 cm²
===============
Lebar : (K ÷ 2) - p
Lebar : (60 ÷ 2) - 20
Lebar : 30 - 20
Lebar : 10 cm
Jawab:
1.Luas Persegi =SxS
=30x30
=900cm²
2.Keliling Persegi Panjang=2(pxl)
60=2(20+l)
60=40+2l
2l=20
l=10cm
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Penyelesaian :
Luas : s × s
Luas : 30 × 30
Luas : 900 cm²
===============
Lebar : (K ÷ 2) - p
Lebar : (60 ÷ 2) - 20
Lebar : 30 - 20
Lebar : 10 cm
Jawab:
1.Luas Persegi =SxS
=30x30
=900cm²
2.Keliling Persegi Panjang=2(pxl)
60=2(20+l)
60=40+2l
2l=20
l=10cm