What calculation must be performed on the diameter ratio to determine how many Suns fit inside a giant star's volume?

Answer

The factor must be cubed

Since volume scales with the cube of the radius or diameter, the linear diameter difference factor must be multiplied by itself three times ($1,400 \times 1,400 \times 1,400$ for VY Canis Majoris).

What calculation must be performed on the diameter ratio to determine how many Suns fit inside a giant star's volume?
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