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The area of a telescope lens is 6.633 ×103 mm2. (a) What is the area in...

The area of a telescope lens is 6.633 ×103 mm2.

(a) What is the area in square feet (ft2)? Enter your answer in scientific notation

(b) If it takes a technician 56.7 s to polish 1.30 ×102 mm2, how long does it take her to polish the entire lens?

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