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Question

Graphene, which is used in the manufacture of integrated circuits, is so thin that a sheet weighing one ounce can cover up to 7 football fields. If a football field has an area of approximately 113 acres, about how many acres could 48 ounces of graphene cover?

A
250
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B
350
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C
450
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D
1,350
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Solution

The correct option is B 450
It is given that 1 ounce of Graphene covers 7 football fields.
Therefore, 48 ounces can cover 7×48=336 football fields. If each football field has an area of 113 acres, then 336 football fields have a total area of 336×113=448 acres.

Therefore, of the choices given, 450 acres is closest to the number of acres 48 ounces of Graphene could cover.


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