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Maths Puzzle
Numerical Ability
Suppose you inscribe a square inside a circle with radius r. All four corners of the square are in the circle. The area of that square is what?
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This is a lever problem I spent an hour trying to figure out last night. I will be so grateful for an explanation.
A woman uses a 10-foot bar to lift a 210-pound stone. If she
I need to simplify this, can you please help?
2/(x^2+4x+3)+ 1/(x+3)