Shadow:
Sirius and its companion both have similar surface temperatures, but Sirius is 10,000 times brighter than its companion. This implies that A. Sirius has 10,000 times the radius of its companion. B. Sirius has 10,000 times the area of its companion. C. Sirius has 10,000 times the mass of its companion.
Shadow:
This one is sort of intuitive @563blackghost
Shadow:
Everyone was focused in the math and science, and didn't look at common sense, which is why I think you have a shot at it.
563blackghost:
The radius no?
Shadow:
You're on the right track, but no.
Shadow:
Because spheres do have a radius...
563blackghost:
So it would have a greater area?
Shadow:
Correct
Shadow:
The other two technically correct. A brighter object could have more mass/radius, yet this one points to a direct relationship with brightness and surface area.
563blackghost:
ah okie *notes*
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