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Which calculation correctly represents the volume of a cylindrical virus particle?

1. The specific volume of a virus particle is 6.02 × 10^-2 cc/g for 1 gram.
2. The radius of the virus particle is 7 Å, equivalent to 7 × 10^-8 cm.
3. The length of the virus particle is 10 × 10^-8 cm.
4. The virus particle's volume is calculated as πr^2 × (7 × 10^-8) × 10 × 10^-8.

Correct answer: The virus particle's volume is calculated as πr^2 × (7 × 10^-8) × 10 × 10^-8.

Solution

The volume of the virus is calculated using the formula for the volume of a cylinder, V = πr²h. Substituting the given radius and length values, option D correctly represents the volume.

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