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Chemistry, 07.09.2021 02:30 glydelxc2780

the area of a telescope lens is 6322 mm2.if it takes a technician 45s to polish 135mm2 how long it takes her to polish the entire lens?

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the area of a telescope lens is 6322 mm2.if it takes a technician 45s to polish 135mm2 how long it t...
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