Use the following sentences to illustrate our school playground

Use the following sentences to illustrate our school playground

The playground of our school is 600 square meters

Make two sentences. The first one uses the method of "listing numbers" and the second one uses the method of "analogy"

Figures: the earth's surface area is 510 million square kilometers, with an average radius of 6371 kilometers and a maximum circumference of 40000 kilometers
For example: at first, there was silence, only the sound of guns, only the sound of the national flag and many flags fluttering. Later, with every sound of guns, there was a thunderous sound

3.6.5.10.9. (). ()

18 17
Six is twice as much as three
10 is twice as much as 5
So the next number is 18
5 is 1 less than 6, 9 is 1 less than 10, so the next number is 17