Question

How many square kilometers is a rectangle that measures 4000 meters by 5000meters? (1 kilometer = 1000)

Answer 1

Remember that

The area of a rectangle is given by the formula

$A=L*W$

In this problem

we have

L=4,000 m-----> convert to kilometers --------> L=4,000/1,000=4 km

W=5,000 m ---------> W=5,000/1,000=5 km

Find out the area

$\begin{gathered} A=(4)*(5) \\ A=20\text{ km}^2 \end{gathered}$

The area is 20 square kilometers