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 $1\frac{1}{3}$ acres, about how many acres could 48 ounces of graphene cover?

• A. $250$
• B. $350$
• C. $450$
• D. $1,350$

Answer 1

Answer: (C)

$450$

It is given that $1$ ounce of Graphene covers $7$ football fields.

Therefore, $48$ ounces can cover $7\times 48=336$ football fields. If each football field has an area of $1\frac{1}{3}$ acres, then $336$ football fields have a total area of $336\times 1\frac{1}{3}=448$ acres.

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