The center of the circle is (0,0). The circle passes through the point (8, -6) what is it’s radius?

Which strategy is used by public health to reduce the incidence of food poisoning?

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The roof of a farm silo is the shape of a hemisphere and is made of sheet tin. if the diameter of the silo is 126.5 feet, how much sheet tin is needed to make the roof? (use π = 3.1416.)