Panjang : Lebar = 3 : 2
Keliling = 2 ( P + L )
70 cm = 2 ( 3x + 2x )
35cm = 5x
7cm = x
Jadi P = 3x = 3(7) = 21cm
L = 2x = 2(7) = 14cm
Luas = P x L
Luas = 21 x 14
Luas = 294cm²
Tolong jadikan jawaban terbaik yah :)
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Panjang : Lebar = 3 : 2
Keliling = 2 ( P + L )
70 cm = 2 ( 3x + 2x )
35cm = 5x
7cm = x
Jadi P = 3x = 3(7) = 21cm
L = 2x = 2(7) = 14cm
Luas = P x L
Luas = 21 x 14
Luas = 294cm²
Tolong jadikan jawaban terbaik yah :)
p : l = 3 : 2
K = 70 cm
Ditanya :
L?
Jawab :
K = 2(p + l)
70 = 2(3x + 2x)
70 = 2(5x)
35 = 5x
x = 7
p = 3x
p = 3(7)
p = 21 cm
l = 2x
l = 2(7)
l = 14 cm
L = p × l
L = 21 × 14
L = 294 cm²