4 ms·

Well, the radius was doubled. The affected land area quadrupled.

• buro9 16y ago
  Area of a 10km circle is 314 km2 Area of a 20km circle is 1257 km2 Assuming they go to 30km or 50km next: Area of a 30km circle is 2827 km2 Area of a 50km circle is 7854 km2
  • mistermann 16y ago
    I have a feeling most people on HN know how to calculate the area of a circle. ;)
    • Retric 16y ago
      <pedantic> True, but calculating the land area by doing so is a mistake because ~50% of that 20KM circle is over the ocean.</pedantic> http://maps.google.com/maps?hl=en&biw=864&bih=471&q=37%C2%B0+25%E2%80%B2+17%E2%80%B3+N,+141%C2%B0+1%E2%80%B2+57%E2%80%B3+E&um=1&ie=UTF-8&hq=&hnear=%2B37%C2%B0+25%27+17.28%22,+%2B141%C2%B0+1%27+57.28%22&gl=us&ei=F4d7Te_KNMaC0QG2w-DuAw&sa=X&oi=geocode_result&ct=title&resnum=1&ved=0CBgQ8gEwAA http://maps.google.com/maps?hl=en&biw=864&bih=471&#3...
      • rphlx 16y ago
        Should we count lakes and other self-contained bodies of water on land?