Answer:
AREA OF SHADED REGION=AREA OF LARGE PARALLELOGRAM-AREA OF SMALL PARALLELOGRAM
=8*12-(6*4)
=96-24
=72unit^2
The answer is <span> π, any number divided by 1 is the same number it was</span>
This is an exponential growth problem. Exponential growth can be expressed mathematically in the following way:

.
Parameter a presents initial amount.
Parameter r is percentage increase.
Parameter t is time.
An equation that would describe given problem is:

t is the time in years.
I attached the graph of this function.
A=bh/2, that is area is equal to half of the product of the base and height, so in this case:
A=(1/2)*10*24