The perimeter of a circular reservoir is 25.12m. What is the floor area of the reservoir?

25.12 ﹣ 3.14 ﹣ 2 = 4 (m) radius
3.14 * 4 & # 178; = 50.24 (M2) the measure of area

RELATED INFORMATIONS

1. There is a circular fountain in the park, with a circumference of 31.4 meters. What is the area of the fountain?
2. The perimeter of a circular nursery measured from the outside is 18.84 meters. How many square meters does the nursery cover?
3. There is a circular flower bed, its perimeter is 18.84 meters, what is the floor area of this flower bed?
4. A round pool, 28.26 meters in circumference, its area is______ Square meters
5. To build a cylindrical fountain pool in the public square, tiles should be pasted on the wall and bottom of the pool. The diameter of the pool bottom is 30 meters and the depth of the pool is 1.2 meters. What is the area of tiles
6. To build a cylindrical fountain pool in the public square, porcelain weights should be pasted on the wall and bottom of the pool. The diameter of the pool bottom is 28 meters, and the depth of the pool is 1.2 meters. What is the area of tile
7. Square to build a cylindrical shape of the pool, the pool wall and bottom to paste tiles. Pool bottom diameter 28 meters, pool depth 1.2 meters, paste the area of how many square meters?
8. The diameter of the bottom of a circular fountain is 8 meters. How many cubic meters of circular concrete are built along the periphery of the fountain, which is 1 meter wide and 20 cm thick? Urgent, as the title
9. Star square has designed a cylindrical fountain with a bottom diameter of 40 meters and a depth of 1 meter. (1) if tiles are laid around and at the bottom of the fountain, how many square meters of tiles are needed? If every liter of water weighs 1kg, how many tons can the pool hold?
10. Street garden to build a cylindrical fountain, the bottom diameter is 10 meters, 1 meter deep, in the fountain bottom and inner wall plastered with cement, plastering cement part of the area is
11. The perimeter of a circular reservoir is 125.6 meters. What is the floor area of this graphic reservoir
12. There is a circular fountain in the park, with a circumference of 31.4 meters. What is the area of the fountain?
13. A cube with an edge length of 6 meters covers an area of () square meters
14. In a 30 meters long, 10 meters wide, 2.2 meters deep cuboid cistern tiles, tiles are. 02 meters long cube, the cistern covers an area of How much is it
15. A reservoir is 2.5m long, 2m wide and 6m deep. How many square meters does it cover
16. A 2-meter-long cube reservoir covers an area of () square meters
17. A cuboid covers an area of 40 square meters, water storage is 60 cubic meters, how many meters deep is the pool
18. To dig a cuboid reservoir, the length of the reservoir is 10 meters, the width is 5 meters, and the depth is 2 meters. How many cubic meters of soil do you need to dig? How many square meters does the basin cover? How many square meters do you need to calculate
19. The floor area of a square pool with 6m edge length is 36m and 178; is it right or wrong
20. A square pool with 4 meters edge length covers an area of ()