Question

$1km=\_\_\_\_mm$

• A. 100000
• B. 1000
• C. 1000000

Answer 1

The correct option is C

1000000

Step 1: We know that

$1km=1000m$

And

$1m=1000mm$

Step 2: So

$1km=\left(1000\times 1000\right)mm$

$1km=1000000mm$

Hence, Option C is correct.