Question #4c78b

1 Answer
Gió
Apr 28, 2016

I found: 4xx10^-5km^2

Explanation:

We can use scientific notation and write that:
length=5xx10^(-3)km
width=8xx10^(-3)km
Area will be A="base"xx"height"
or:
A=5xx10^(-3)xx8xx10^(-3)=(5xx8)10^((-3)+(-3))=
using the property of exponents.
So:
=40xx10^(-6)=4xx10^-5km^2

or: 0.00004km^2

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