Radius-to-height ratio and volume given: find the dimensions, then height or surface area

1. A.
   $462\ \text{cm}^2$
2. B.
   $616\ \text{cm}^2$
3. C.
   $770\ \text{cm}^2$
4. D.
   $786\ \text{cm}^2$

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1. A.
   242 cm$^2$
2. B.
   385 cm$^2$
3. C.
   462 cm$^2$
4. D.
   770 cm$^2$

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1. A.
   3.5 cm
2. B.
   7.0 cm
3. C.
   10.5 cm
4. D.
   14.0 cm

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