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Verified answer
Diketahui :- Panjang = p
- Lebar = l
- Selisih Panjang Dan Lebar = 5 cm
- Keliling Persegi Panjang = 60 cm
Ditanya :
A. Panjang = ....?
B. Lebar = ....?
Penyelesaian :
A. Panjang :
l = p - 5
K = 60
K = 2(p + l)
60 = 2(p + p - 5)
60 = 2(2p - 5)
60 = 4p - 10
4p = 60 + 10
4p = 70
p = 70/4
p = 17,5 cm
B. Lebar :
l = p - 5
l = 17,5 - 5
l = 12,5 cm
Maaf Kalau Salah
Verified answer
K = 2p + 2l60 cm = 2(l + 5 cm) + 2l
60 cm = 2l + 10 cm + 2l
50 cm = 4l
l = 12,5 cm
p = l + 5 cm
= 12,5 cm + 5 cm
= 17,5 cm