[tex]\color{purple} {\bf jwb}[/tex]
perbandingan panjang : lebar : tinggi = 5 : 4 : 3
panjang = 5k
lebar = 4k
tinggi = 3k
luas ABCD = panjang x lebar = 5k x 4k = 20k^2
luas ABCD = 80 cm^2
20k^2 = 80
k^2 = 4
k = 2
k = 2 panjang = 10 cm lebar = 8 cm tinggi = 6 cm
volume balok = panjang x lebar x tinggi = 10 cm x 8 cm x 6 cm = 480 cm^3 [tex]\color{aqua} {\bf opsi ~c}[/tex]
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[tex]\color{purple} {\bf jwb}[/tex]
perbandingan panjang : lebar : tinggi = 5 : 4 : 3
panjang = 5k
lebar = 4k
tinggi = 3k
luas ABCD = panjang x lebar = 5k x 4k = 20k^2
luas ABCD = 80 cm^2
20k^2 = 80
k^2 = 4
k = 2
k = 2 panjang = 10 cm lebar = 8 cm tinggi = 6 cm
volume balok = panjang x lebar x tinggi = 10 cm x 8 cm x 6 cm = 480 cm^3 [tex]\color{aqua} {\bf opsi ~c}[/tex]