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If you want to cut a rectangular iron sheet with an area of 150cm2 so that its length is 5cm more than its width, the length of the rectangle is______ Cm in width______ cm．
Let the length of a rectangle be xcmx (X-5) = 150x = 15 or x = - 10 (rounding off) and the width be 15-5 = 10, so the answer is 15; 10
The bottom of a cuboid is a square with a side length of 14 cm, and its side area is 560 square cm. What is the volume of this cuboid?
The width of the side area is the edge length of the cuboid
The length of lateral area is 4 * 14 = 56
Because the side area is 560 square centimeters
So the edge length is 10 cm
So the volume of this cuboid is 10 * 14 * 14 = 1960cm & # 179;
Cuboid's length 15 centimeters, height 6 centimeters, volume 900 cubic centimeters, then how to seek the surface area width
Let the width be x, then x = 900 / (15 * 6) = 900 / 90 = 10 (CM), and then the surface area s = 2 (15 * 10 + 10 * 6 + 6 * 15) = 2 * 300 = 600 (cm 2)
A room with 20 square decimeters of floor tiles needs 180 pieces in total. If you use 6 square decimeters of floor tiles, how much will it take
When using 20 square decimeters, the total paving area is: 20 * 180 = 3600
When 6 decimeter brick is used, the area of a brick is 6 * 6 = 36
So 3600 / 36 = 100
A total of 100 6 decimeter square bricks are required
What's the area of a square with a side length of 1 square decimeter? What's the area of a square with a side length of 1 centimeter? How much is the area in daily life about 1 square centimeter
A square with a side length of 1 decimeter is 1 square decimeter, and a square with a side length of 1 centimeter is 1 square centimeter
1 square centimeter
Xiaomu's nail surface area is about 1 square centimeter
The home key of the iPhone is about 1 cm (slightly smaller, about 0.8 square cm)
1 square decimeter
The side section of the tissue paper in Qingfeng box is about 1 square decimeter
The 1 / 6 size of A4 paper is about 1 square decimeter
1 square meter
I don't want to talk about that. In this country of several W per square meter, I believe you will have a deep understanding of one square meter
What is the side length______ A square with a side length of 1 decimeter has an area of 1 square centimeter______ ．
A square with a side length of 1 cm has an area of 1 square centimeter; a square with a side length of 1 decimeter has an area of 1 square decimeter
When the side length of a square is tripled, the area will be 918 square decimeters. How many square centimeters is the original area?
If the side length is increased by 3 times, the area will be increased by 3 × 3 = 9 times,
Original area = 918 △ 9 = 102 square decimeters = 10200 square centimeters
Place a square with an area of 1 square decimeter with a square piece of paper with a side length of 1 cm. A total of () such small square pieces of paper are needed
A square with 1 cm side length is needed to make a square with an area of 1 square decimeter
5. If the side of the cylinder is a square with a side length of 6.28 decimeters, then the height of the cylinder is () decimeters and the bottom area is () square minutes
Next: rice
6. The height of a cylinder is 5 decimeters, the circumference of its bottom surface is 12 and 56 decimeters, and its volume is () cubic decimeters
7. A cone and a cylinder have the same base and height. It is known that the sum of their volumes is 40 cubic decimeters, in which the volume of the cone is () cubic decimeters and the volume of the cylinder is cubic decimeters
8. A cylinder steel block with a bottom area of 9 square centimeters and a height of 6 centimeters is fused into a cone. If the bottom areas of the cone and the cylinder are equal, then the height of the cone is () centimeters; if the height of the cone and the cylinder are equal, then the bottom area of the cone is () square centimeters
9. The front wheel of a roller is 4 meters wide and 1 meter in diameter. The front wheel rolls two times and the road surface is () square meters
5：6.28 3.14
6：62.8
7：10 30
8：18 27
9：25.12
The side of a cylinder is a square with a side length of 4 decimeters. The side area of the cylinder is______ Square decimeter
4 × 4 = 16 (square decimeter). A: the side area of this cylinder is 16 square decimeters
RELATED INFORMATIONS
- 1. Xiao Li wants to use a square piece of paper with an area of 900 square meters to cut a rectangular piece of paper with an area of 800 square meters along the direction of the side, so that the ratio of length to width is 5:4. I don't know if it can be cut out, but I'm worried. Xiao Ming sees it and says, "don't worry, You must be able to use a large piece of paper to cut a small piece of paper. "Do you agree with Xiao Ming? Can Xiao Li use this piece of paper to cut a piece of paper that meets the requirements?
- 2. A rectangle with a square bottom surface, if the height is reduced by 2 cm, then the surface area will be reduced by 64 square cm. How much cubic cm is the volume reduced? Every step is best written clearly
- 3. One is just cut into two squares, and the surface area increases by 32 square centimeters. How many cubic centimeters is the volume of this rectangle? Come on,
- 4. There are two cylinders with equal base area. The height of the first cylinder is 4 / 7 of that of the second. The volume of the first cylinder is 24 cubic centimeters There are two cylinders with the same base area. The height of the first cylinder is 4 / 7 of that of the second cylinder. The volume of the first cylinder is 24 cubic centimeters. How many cubic centimeters more is the volume of the second cylinder than that of the first cylinder? Ask this type of questions to explain~ Give me more math problems
- 5. The perimeter of the bottom of a cube is 16 cm, and its surface area is______ Square centimeter, the volume is______ Cubic centimeter
- 6. As shown in the figure, the area of a triangle is twice that of a square, less than 3 cubic centimeters
- 7. A cone has a volume of 36 cubic centimeters and a height of 6 centimeters. What is its bottom area? 2. The volume and bottom area of a cylinder and a cone are equal respectively. It is known that the height of the cylinder is 15 cm and the height of the cone is how many cm
- 8. The volume of cone a is 128 cubic centimeters, and the height is 12 centimeters. The bottom area of cone B and cone a is equal, and the height is 9 centimeters. What is the volume of cone B?
- 9. The volume of a cylinder is 18 cubic centimeters more than that of a cone with the same base and height. How many cubic centimeters is the volume of a cone?
- 10. The bottom area and height of a cylinder and a cone are equal. The volume of a cone is 36 cubic centimeters less than that of a cylinder. What is the volume of a cylinder?
- 11. Use a 54 cm long wire to form a rectangle. If the length is twice the width, what is the length and width of the rectangle? What's the area?
- 12. ① What is the area ratio of a square to a circle if the perimeter of a square and a circle are equal? ② If the area of a square is 314 square centimeters, the area of a circle is______ Square centimeter
- 13. A 128 cm long iron wire is enclosed into a rectangle according to the ratio of length to width of 5:3. How many square centimeters is the area of the rectangle?
- 14. Circle the 128 cm wire into a rectangle so that the length is 18 cm more than the width. How many cm are the length and width?
- 15. Use 60 decimeter long wire to form a rectangle. The ratio of length to width of the rectangle is 3:2. What's its area?
- 16. Use a 40 cm long wire to form a rectangle. What's the area of the rectangle?
- 17. A piece of iron wire is 24 meters long. It should be enclosed into a rectangle. The length is 1.4 times the width. The area of this rectangle is () square meters?
- 18. A wire is surrounded by a circle with a diameter of 4cm. If it is surrounded by a rectangle, the length of the rectangle is 6cm, then the width of the rectangle is () cm Urgent! According to the sentence "the width of a rectangle is the radius of a circle" in the book, I am right! Asked the teacher only said that this circle has two diameters! What's the matter There are three options A2CM B0．56CM C0．28CM I choose a, but the teacher said to choose C, what's the matter?
- 19. Use a 54 cm long wire to form a rectangle. If the length is twice the width, what is the length and width of the rectangle? What's the area?
- 20. On a square board, it is the largest circle next to it. The perimeter of the board is known to be 120 decimeters. How many square decimeters is the area of this circle?