Question

Please help me quickly I don’t need the explanation I just need the answer I’m sorry I just need a fast

Answer 1

Notice that the area is equivalent to the area of the complete rectangle minus the area of the 3km x 4km rectangle.

$A=TA-AS\text{.}$

Now, the area of a rectangle is given by the following formula:

$A=\text{width}\cdot\text{lenght.}$

Therefore:

$A=9km\cdot16km-3km\cdot4km\text{.}$

Simplifying the above result, we get:

$A=(144-12)km^2=132km^2.$

Answer:

$132km^2.$