372 is the answer.
(9*6*3)+(10*7*3)=372
Answer:
The enlargement ratio is 3:4
Step-by-step explanation:
We are given
a width of 16 units and length of 12 units
so,

and

now, we can find enlargement ratio
we can use formula
enlargement ratio = (length)/(width)

now, we can plug values

now, we can simplify it

So,
The enlargement ratio is 3:4
It is not.
400 decimeters = 4,000 cm
4,000 cm = 40 m