This line is $1$ cm: https://cdn.kastatic.org/ka-perseus-graphie/63e1c60a37540f3e30836b01d3a563c9dc053501.svg Look at the caterpillar below. https://cdn.kastatic.org/ka-perseus-graphie/7372cca00aec5b1a7fad81ec6ec5b98204d6c8f8.svg About how long is the caterpillar?