Panjang persegi panjang 4cm lebih dari lebarnya. kelilinh 36cm. bila panjang xcm. kalimat matematikanya? plis jawab cepat!
simmeifenica
P = 4 + l = x K = 36 cm K = ( p + l ) x 2 36 = ( 4 + l + l ) x2 36 = ( 4 + 2l ) x 2 36 = 8 + 4l 36 = 8 + 4l 4l = 36 - 8 4l = 28 l = 7 p = 4 + 7 = 11
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Harrun
Dik : P=L+4 Kell = 36 Dit : P= ?? Jwb : Kell = 2(P+L) 36 = 2((L+4)+L) 36 = 2 ( 4 + 2L ) 36 = 4L + 8 4L = 36 - 8 4L = 28 L = 7
K = 36 cm
K = ( p + l ) x 2
36 = ( 4 + l + l ) x2
36 = ( 4 + 2l ) x 2
36 = 8 + 4l
36 = 8 + 4l
4l = 36 - 8
4l = 28
l = 7
p = 4 + 7 = 11
Dit : P= ??
Jwb : Kell = 2(P+L)
36 = 2((L+4)+L)
36 = 2 ( 4 + 2L )
36 = 4L + 8
4L = 36 - 8
4L = 28
L = 7
P = L + 4 = 7 + 4 = 11