Suppose that volumes of four stars in the milky way are 2.7 x 1018 km3, 6.9 x 1012 km3, 2.2 x 1012 km3, and 4.9 x 1021 km3. what is the order of the stars from least to greatest volume?

The order is Star 3 < Star 2 < Star 1 < Star 4

Explanation:

Lets name the stars with their written order.

Star 1: 2.7 x 10^18 km3

Star 2: 6.9 x 10^12 km3

Star 3: 2.2 x 10^12 km3

Star 4: 4.9 x 10^21 km3

Star with lowest power of 10 has the least volume. Therefore, star 2 and star 3 would be the stars with least volume. Star 2's coefficient is better than Star 3. Thus, the order will be Star 3 < Star 2 < Star 1 < Star 4.

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