Question

which statement is true about millimeters and kilometers? there are 100 millimeters in a kilometer. there are 1,000 millimeters in a kilometer. there are 1,000,000 kilometers in a millimeter. there are 1,000,000 millimeters in a kilometer.

Explanation:

Step1: Relate km to meters

$1 \text{ kilometer} = 1000 \text{ meters}$

Step2: Relate meters to millimeters

$1 \text{ meter} = 1000 \text{ millimeters}$

Step3: Convert km to mm

$1 \text{ kilometer} = 1000 \times 1000 \text{ millimeters} = 1,000,000 \text{ millimeters}$

Answer:

There are 1,000,000 millimeters in a kilometer.