Question

You may have seen the star Betelgeuse (BEETLE juice) in the night sky. It is a red giant star, which has a radius of 821.3 million kilometers. By comparison, our Sun has a radius of 0.5 million kilometers. Suppose the circle shown represents our Sun. How big would the model of Betelgeuse be if you drew it to scale?

Answer 1

Answer:

Step-by-step explanation:

ratio of radii=ratio of diameters=(1642.6)/1=1642.6

ratio of volume$=\frac{\pi R^{3}}{\pi  r^{3}}\\=(\frac{R}{r})^3\\=(\frac{2R}{2r})^3\\=(\frac{D}{d})^3\\=(\frac{1642.6}{1})^3\\=(1642.6)^3$