One half of two-thirds of a meter is () and one-third of a meter is two fifths of a meter The length: width: height of cuboid = 3:2:1, where the length is 12cm, the width is () the height is () the sum of the edge lengths is () the proportion of the length to the sum of the edge lengths, and the width is the proportion of the length to the length () 9 / 28 () = 6 △ () = 3 △ 4 = () (fill in decimal)

One half of two-thirds of a meter is () and one-third of a meter is two fifths of a meter The length: width: height of cuboid = 3:2:1, where the length is 12cm, the width is () the height is () the sum of the edge lengths is () the proportion of the length to the sum of the edge lengths, and the width is the proportion of the length to the length () 9 / 28 () = 6 △ () = 3 △ 4 = () (fill in decimal)

Half of two-thirds of a meter is (one-third of a meter)
One third of the six fifths of a meter is two fifths of a meter
Cuboid length: width: height = 3:2:1, where the length is 12cm, the width is (8cm) and the height is (4cm)
The total length of the edge is (48 cm), the length is 1 / 4 of the total length, and the width is 1 / 6 of the length
(12) 9 / 28 = 21 / 28 = 6 (8) = 3 / 4 = (0.75) (fill in decimal)