maths...

frist of all, change cm to m:

40cm = 0.4m
12cm = 0.12m

(Volume = height x width x length)

The height of the box = 2.304 / (0.40 x 0.12)
= 2.304 / 0.048
= 48m

The height of the box is 48m.


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Or, you could find it by using formular.

Let the height of the box be y metres,

Volume = height x width x length
2.304 = y x 0.12 x 0.4
y = 48 m

The height of the box is 48 m.

[(2.304x1000000)/40/12]/100
=2304000/40/12
=4800/100
=48

先張長同闊化返單位40 cm=0.4m ,12cm=0.12m
設高為A
根據公式 長x高x長=體積
0.4x0.12xA=2.304
0.048A=2.304
A=48m