GMAT Integrated Reasoning
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Source: PREP
Level: 2
An architect is planning to incorporate several stone spheres of different sizes into the landscaping of a public park, and workers who will be applying a finish to the exterior of the spheres need to know the surface area of each sphere. The finishing process costs $92 per square meter. The surface area of a sphere is equal to 
where r is the radius of the sphere.
In the table, select the value that is closest to the cost of finishing a sphere with a 5.50-meter circumference as well as the cost of finishing a sphere with a 7.85-meter circumference. Make only two selections, one in each column.
| Circumference 7.85 m | Circumference 5.50 m | |
|---|---|---|
| $900 | ||
| $1,200 | ||
| $1,800 | ||
| $2,800 | ||
| $3,200 | ||
| $4,500 |