Math
posted by Aria .
A contact lens has a spherical shape and pretend it is being held on a finger ready to put into an eye. (All measures are in millimetres.) Suppose we take the semicircular crosssection through the middle of the lens. Find the equation of the lens if the centrepoint of the crosssection is (0,3) and a speck of dirt on the lens at (3,3)Find the radius. Round off your answer to the nearest decimal place.
Then find the height of a point that is 2 mm from the centre. Round off your answer to the nearest decimal place.
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