#3065: Square Units

XKCD comic, described below.
Transcript
Ambox notice.png This transcript is incomplete:
Describe the layout of panels and arrows. If you can fix this issue, edit the page!

[Arrows point to each consecutive panel.]

[Megan is looking at her phone, with Cueball standing next to her.]

Megan: This newly-described insect can devour up to a square inch of grass per day.

Cueball: Oh, neat.

[Cueball is speaking to Ponytail.]

Cueball: ...it eats a square inch, or 6 cm², of grass per day...

[Ponytail is speaking to Hairy.]

Ponytail: ...a 6-centimeter (2½ inch) square of grass, or 36 cm²...

[Arrows now point to each consecutive conversion.]

Written out of panel: ...a 36 centimeter square, or over a square foot...

Written out of panel: ...a square foot, or 900 cm²...

Written out of panel: ...a 900 cm (30 foot) square...

Written out of panel: ...a 30 foot square of grass (900 square feet)...

Written out of panel: ...a 900 foot square, or almost 20 acres...

Written out of panel: ...20 acres (8 hectares, or 80,000 square meters)...

Written out of panel: ...an 80,000 meter (80 km) square...

Written out of panel: ...a square 80 km wide, or roughly 2,500 square miles...

Written out of panel: ...a 2,500-mile square, or twice the land area of Australia, per day...

[An arrow points from the last conversion to the last panel.]

[Hairbun is looking at her phone, with White Hat, Danish and Blondie standing next to her.]

Hairbun: Did you hear about this insect that defoliates the entire land area of Australia twice a day?

White Hat: Gosh!

Danish: Wow.

Blondie: I hope at least it's contained there...


(Sourced from explainxkcd.com)

Title text:The biggest I've seen in a published source in the wild is an 80-fold error in a reported distance, which I think came from a series of at least three unit conversions and area/length misinterpretations.


ExplainOriginal