nomor 9 caranya gimana yaa? Mohon pake cara tugas besok ni makasih

a) Misalkan 1 rusuk dengan 5x
Rusuk balok = 5x,3x, 2x

B) 5x . 3x . 2x = 3,75
30x^3 = 3750 cm^3
X^3 = 125cm
X = 5 cm

C) panjang = 5x = 5(5) = 25 cm
Lebar. = 3x = 3(5) = 15cm
Tinggi. = 2x = 2( 5) = 10 cm

D) lp balok
Lp = 2pl + 2pt + 2lt
= 2x25x15 + 2x25x10 + 2x15x10
= 750 + 500 + 300
= 1550 cm^2



Maaf kalo salah
#hanyamembantu

Perbandingan p:l:t = 5:3:2
V = 3,75 l =3,75 dm³ = 3.750 cm³
Jawab:
a.misalkan
p=5x
l =3x
t =2x
b. V = p x l x t
3.750 cm³= 5x X 3x X 2x
3.750 cm³= 30x³
x³ = 3.750 : 30
x³ = 125
x= ³√125
x= 5 cm
c. p = 5.5 = 25 cm
l = 3.5= 15 cm
t = 2.5 = 10 cm
d. L.p = 2(pl +pt + lt)
= 2(25.15 + 25.10 + 15.10)
= 2(375 + 250 + 150)
= 2(775)
= 1.550 cm²
Semoga benar......