Diketahui persegi panjang dengan panjang sama dengan (5x - 6) cm, dan lebar (x + 17) cm. jika keliling persegi panjang adalah 154cm, maka panjang persegi panjang adalah...
Beta27
K = 2(p+l) 154 = 2(5x - 6 + x + 17) 154 = 2(6x + 11) 154 = 12x + 22 154-22 = 12x 132 = 12x 132 : 12 = x 11 = x
maka panjang p = 5x - 6 p = 5(11) - 6 p = 55 - 6 p = 49 cm
1 votes Thanks 1
hafidhkoi00
K. = 2 x (p+l) = 2 x (5x-6 + x+17) = 2 x (6x +11) 154 = 12x +22 154-22= 12x 132. = 12x 11 = x
154 = 2(5x - 6 + x + 17)
154 = 2(6x + 11)
154 = 12x + 22
154-22 = 12x
132 = 12x
132 : 12 = x
11 = x
maka panjang
p = 5x - 6
p = 5(11) - 6
p = 55 - 6
p = 49 cm
= 2 x (5x-6 + x+17)
= 2 x (6x +11)
154 = 12x +22
154-22= 12x
132. = 12x
11 = x
panjang = 5x -6
= 5. 11 -6
= 55-6
= 49
lebar. = x + 17
= 11 + 17
= 28