1. Canada – 202,080 km / 125,567 mi 2. Indonesia – 54,716 km / 33,998 mi 3. Russia – 37,653 km / 23,396 mi 4. Philippines – 36,289 km / 22548 mi 5. Japan – 29,751 km / 18,486 mi 6. Australia – 25,760 km / 16,006 mi 7. Norway – 25,148 km / 15,626 mi 8. United States – 19,924 km / 12,380 mi 9. New Zealand – 15,134 km / 9403 mi 10. China – 14,500 km / 9009 mi
Note: Greenland has 44,087 km of coastline but it is not yet a fully independent country.
There is an abandoned aquarium in an empty house. The aquarium has three large fish and three small fish. But after a week, one large fish and two small fish die.
Farmer Finnegan needs to build a fence to keep his horses on his property. He only has a little over 1.5 miles of fence materials, but there’s also a mile-long straight river running through his property. What shape should he use for the fenced in area to give his horses the most space possible?
Our dear friend Finnegan should build a half-circle fence with the river as the diameter, giving the horses about 0.4 square miles to frolic and play in.
Area of semi-circle = πr2 / 2 = π × .5 miles2 / 2 = 0.3927