Jawab:
d. 90cm
Penjelasan dengan langkah-langkah:
Luas Persegi=d²÷2
=20²÷2
=400÷2=200 cm²
Luas Persegi Panjang=p×l
200 = p×5
p=200÷5
=40 cm
Keliling Halaman= 2(40+5)
=2(45)=90 cm
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Jawab:
d. 90cm
Penjelasan dengan langkah-langkah:
Luas Persegi=d²÷2
=20²÷2
=400÷2=200 cm²
Luas Persegi Panjang=p×l
200 = p×5
p=200÷5
=40 cm
Keliling Halaman= 2(40+5)
=2(45)=90 cm