Who is the president of USA?

anyone want to talk to me

i am bored

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According to modern science, earth is about 4.5 billion years old and written human history extends back about 10,000 years. suppose the entire history of earth is represented with a 10-meter-long timeline, with the birth of earth on one end and today at the other end.

Write a function for a rotation 90 degrees counter clockwise about the origin, point 0

Find the area of an equilateral triangle with a side of 6 inches