Suatu persegi panjang memiliki paNJangnya lebih 5 m dari lebarnya. Jika keliling persegi panjang 62 m maka luas persegi panjang tersebut aDlah
refiandfia
P = l + 5 kell = 2p + 2l --> 62 = 2(l+5) + 2l 62 = 2l + 10 + 2l --> 62 = 10 + 4l 62 - 10 = 4l --> 52 = 4l --> l = 13 cm ; p = l + 5 --> 13 + 5 = 18
luas = p x l --> 18 x 13 = 234 cm^2
1 votes Thanks 1
rfdh99
Lebar = x panjang = x + 5 keliling = 4.s = 2x + 2x + 10 = 62 4x + 10 = 62 4x = 62 - 10 x = 13 lebar = 13 panjang = 13 + 5 = 18 L = p x l = 18 m x 13 m = 234 m^2
kell = 2p + 2l --> 62 = 2(l+5) + 2l
62 = 2l + 10 + 2l --> 62 = 10 + 4l
62 - 10 = 4l --> 52 = 4l --> l = 13 cm ; p = l + 5 --> 13 + 5 = 18
luas = p x l --> 18 x 13 = 234 cm^2
panjang = x + 5
keliling = 4.s = 2x + 2x + 10 = 62
4x + 10 = 62
4x = 62 - 10
x = 13
lebar = 13
panjang = 13 + 5 = 18
L = p x l
= 18 m x 13 m
= 234 m^2