mencari panjang dan lebar persegi panjang

Sebuah persegi panjang memiliki keliling 200 cm panjang 2×+4 dan lebar ×+3 maka berapakah panjang dan lebarnya

Default Asked on January 26, 2016 in Matematika.
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1 Answer(s)

Rumus keliling persegi panjang = 2(p+l)
200 = 2[(2x+4) + (x+3)]
200 = [(4x+8) + (2x+6)]
200 = 14 + 6x
6x = 186
x = 31

jadi
panjang = 2(31)+4 = 66cm
lebar = 31+3 = 34cm

Train Answered on January 29, 2016.
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