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An introduction of pi?
Pi is the ratio of the circumference of a circle to its diameter; it can be calculated as circumference divided by diameter, or circumference/diameter. It is an irrational number which starts 3.14159265358979323846264338327050..., but it is usually approximated to 3.14 or 22/7, though using the [π] button on a calculator makes it easier to enter a fairly accurate value.
Who first accurately calculated the circumference of the Earth?
Eratothsenes Follow the link to his very cool projectThe Ancient Greeks - and they got it right, which was more than Columbus did!The Greek mathematician Eratosthenes calculated the circumference of the Earth fairly accurately over 2300 years ago!Eratosthenes was the first person to do this. He measured the distance netween two points and the different angles mad by the Sun - and worked out from these. His result was surprisingly accurate.
Can I run 300 meters in 65 seconds fairly easy?
This is if you can run around 15 to 16 feet per second or 10 to 11 miles per hour. If you train 10mph is not that hard to achieve. So yes it is fairly easy for a fit person.
What is an alter table?
Alter table command is not a part of the ANSI standard, but is widely available. Its form is fairly consistent, although its capabilities vary considerably.
Is pretty good an adjective or adverb?
The word good is an adjective. The word pretty (meaning fairly) is colloquially an adverb here, modifying good, although it is typically an adjective. Together they will modify a noun.
