perbandingan 7:5:3 jika luas nyah 525 tentukan volume balok

7 : 3 : 5 = 7a : 3a : 5a

mencari KPK utk menentukan nilai a

a = 7 x 3 x 5
a = 105
a = 525/105 = 5

panjang = 7 . 5 = 35 cm
lebar = 3 . 5 = 15 cm
tinggi = 5 . 5 = 25 cm

V = p . l . t
= 35 . 15 . 25
= 13.125 cm²