The answer to your question is .........
Given:
The scale factor is 1:12.
Dimension of model = 32 cm
To find:
The actual dimension in m.
Solution:
Let x be the actual dimension.
The scale factor is 1:12 and the dimension of model is 32 cm.

On cross multiplication, we get


![[\because 1\ m=100\ cm]](https://tex.z-dn.net/?f=%5B%5Cbecause%201%5C%20m%3D100%5C%20cm%5D)
Therefore, the actual dimension is 3.84 m.
If it is to match 3+1 which is 4 the value to satisfy X is -1
Cube = all sides same length, which equals
A*A*A = 27
Which is the same as A^3 = 27
Therefore,the cube root is +/-3, but as it is length, must be positive, so is +3