jwb
panjang persegi panjang = 3x
lebar = 2x
2(p + l)
= 2(3x+2x)
= 10x
10x = 240 (keliling = 240)
= 24
2x = 2(24)
= 48
lebar persegi panjang = 48 cm opsi (B)
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jwb
panjang persegi panjang = 3x
lebar = 2x
2(p + l)
= 2(3x+2x)
= 10x
10x = 240 (keliling = 240)
= 24
2x = 2(24)
= 48
lebar persegi panjang = 48 cm opsi (B)