The area of a telescope lens is 7903 mm 2. If it takes a technician 45 s to polish 135 mm 2, how long does it take her to polish the entire lens?
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Our data indicates that this problem or a close variation was asked in Chemistry: The Molecular Nature of Matter and Change - Silberberg 8th Edition. You can also practice Chemistry: The Molecular Nature of Matter and Change - Silberberg 8th Edition practice problems.