What's the proportion of ocean area to the total area of the earth? What's the proportion of land area to the total area of the earth? (what's the proportion!)

The sea area accounts for 3 / 4 of the total area of the earth, and the land area accounts for 1 / 4 of the total area of the earth

RELATED INFORMATIONS

1. Don't go into too much detail, just say that the ocean accounts for a few parts of the total area of the earth
2. Cut 6 square meters of glass into 9 pieces, each piece is () square meters, three pieces account for ()
3. The side length of square glass is 8 decimeters. Now there are 9 pieces of such glass. How many square decimeters do they have in total? How to explain to children
4. The rose planting area in the botanical garden accounts for 2 / 9 of the total area, and the rose accounts for 1 / 3 of the total area. Which kind of flower has the largest planting area? How much is it?
5. What's the area of the ocean on earth?
6. China's mountainous area accounts for about a few percent of the total land area emergency
7. What percentage of the total area of Tibet
8. How to calculate the floor area of a house
9. How to calculate the room area How many square meters is a room 2.1 meters long and 2.1 meters wide?
10. On the conversion of civil housing use area and construction area! The usable area is 21.5 square meters. How many square meters is the building area? How to calculate? Please don't paste a lot of I just want an answer. The floor area of my small apartment is 21.5 square meters, single balcony and side guard. What's the building area? The house was built in 1990 (brick concrete structure)!
11. Divide the rectangle in the figure below into six parts. What's the area of a in the total area? What's the area of a in the sum of the areas of B. C? B. The sum of the areas of C is a fraction of the sum of the areas of d.e.f. (remark: there are 6 copies in total, and a.b.c.d.e.f takes one copy each
12. There is a rectangular vegetable field with an area of 5 square meters, which is divided into 6 pieces in the draw. How many parts of the total area does each piece of land occupy? How many square meters is each piece of land?
13. Divide a 3-meter-long and 2-meter-wide rectangular sheet iron into 9 parts on average. How many parts of the sheet iron does each share?
14. One is a 15 meter long and 12 meter wide rectangular sheet iron, which is divided into nine parts on average. How many square meters is each? How many parts of this sheet iron is each?
15. Divide a 4-meter-long and 2-meter-wide rectangular sheet iron into 10 parts. How many square meters is the area of each sheet iron? How many parts of this sheet iron is each sheet iron?
16. Divide a 3-meter-long and 2-meter-wide rectangular sheet iron into 9 parts on average. How many square meters is the area of each part? How many parts of this sheet iron is each part
17. Divide a 3-meter-long and 2-meter-wide rectangular sheet iron into 9 parts on average. What is the area of each part? What is the proportion of each part of the sheet iron? Please write down the whole process of the answer
18. The number of apple trees is one fourth less than that of peach trees, and the number of apple trees is a fraction of that of peach trees
19. Peach tree is three fourths less than apple tree. How much is peach tree? How much is apple tree
20. Two fifths of an orchard are pear trees, two fifths are peach trees, and the rest are apple trees? If the planting area of each fruit tree is equal, what percentage of the total area of pear trees should be reduced?