What is the dot product of vector A (2, 3) and vector B (-4, 1)?
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Question: What is the limit of sin(x)/x as x approaches 0?
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Question: What is the area of a circle with a radius of 5 cm? What is the perimeter of a rectangle with length 10 cm and width 6 cm? What is the area of a parallelogram with base length 12 cm and height 8 cm?