Question

Solve using Matrices

I figured out letter a.


It's 15.75 units^2


But I just CANNOT find how to figure out b.


Someone please help!

Answer 1

Answer: 4823243.75 square miles

Explanation:

We know that each unit represents 175 miles. This means that one square unit is equal to
`175^2 =30625` square miles.

Thus, the area is
`(30625)(15.75)=4823243.75` square miles.