Perbandingan panjang dan lebar sebuah persegi panjang adalah 5:3. jika kelilingnya 96 cm. maka berapa luas persegi panjang tersebut?
Ilham098765
P : l = 5 : 3 K = 2(p + l) 96 = 2 (p + l) 48 = (p + l) p = 5 : 8 × 48 = 30 l = 3 : 8 × 48 = 15 L = p × l L = 30 × 15 L = 450 cm^2
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muna79
K. persegi panjang = 2(p+l) 96. = 2(5x + 3x) 96. = 2 x ( 8x ) 96. = 16x 96. = x 96/16 6. = x p= 5 x 6 = 30 l. = 3 x 6 = 18 luas persegi panjang = p x l 30 x 18 540 cm2
K = 2(p + l)
96 = 2 (p + l)
48 = (p + l)
p = 5 : 8 × 48 = 30
l = 3 : 8 × 48 = 15
L = p × l
L = 30 × 15
L = 450 cm^2
96. = 2(5x + 3x)
96. = 2 x ( 8x )
96. = 16x
96. = x
96/16
6. = x
p= 5 x 6 = 30
l. = 3 x 6 = 18
luas persegi panjang = p x l
30 x 18
540 cm2