Apabila sisi-sisi segitiga abc adalah a = 2x cm , b = 3x cm , dan c= 5x cm , serta keliling segitiga ABC = 35 cm , maka tentukan sisi - sisi segitiga abc tersebut!
Ganjar64
K = a+b+c 35 = 2x+3x+5x 35 = 10x x = 35/10 x = 3,5
sisinya: a = 2x = 2(3,5) = 7 cm b = 3x = 3(3,5) = 10,5 cm c = 5x = 5(3,5) = 17,5 cm
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otek
Dik: sisi-sisi sebuah segitiga a = 2x cm b = 3x cm c = 5x cm K = 35 cm Dit: a = ...? ; b = ...? ; c = ... ? Jwb: K = 35 cm 2x cm + 3x cm + 5x cm = 35 cm (10x) cm = 35 cm 10 x = 35 x = x = 3,5
a = 2.(3,5) cm = 7 cm
b = 3.(3,5) cm = 10,5 cm
c = 5.(3,5) cm = 17,5 cm
jadi, panjang sisi-sisi segitiga tersebut adalah (7 cm), (10,5 cm), dan (17,5 cm)
35 = 2x+3x+5x
35 = 10x
x = 35/10
x = 3,5
sisinya:
a = 2x = 2(3,5) = 7 cm
b = 3x = 3(3,5) = 10,5 cm
c = 5x = 5(3,5) = 17,5 cm
a = 2x cm
b = 3x cm
c = 5x cm
K = 35 cm
Dit: a = ...? ; b = ...? ; c = ... ?
Jwb:
K = 35 cm
2x cm + 3x cm + 5x cm = 35 cm
(10x) cm = 35 cm
10 x = 35
x =
x = 3,5
a = 2.(3,5) cm
= 7 cm
b = 3.(3,5) cm
= 10,5 cm
c = 5.(3,5) cm
= 17,5 cm
jadi, panjang sisi-sisi segitiga tersebut adalah (7 cm), (10,5 cm), dan (17,5 cm)