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To illustrate the relative sizes of planets, a student intends to draw on the school yard a circle with a diameter 250feet; the actual radius
To illustrate the relative sizes of planets, a student intends to draw on the school yard a circle with a diameter 250feet; the actual radius of the circle is a random variable with mean of 125feet and a variance of 0.1ft2 (standard deviation = 0.32ft). what are the mean and the variance of the area of the circle approximated to first order?
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