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A rectangular iron plate is 20 cm long and 14 cm wide. In this way, the cube with a side length of 2 cm is cut off from the four corners, and then it is made into a lidless zygote. What is the volume of this box
16 * 10 * 2 = 320 CC
The other is to cut out a 2 cm square instead of a cube
A 12 cm long, 9 cm wide rectangular cardboard from the four corners of each remove the side length of 2 cm square, but along the dotted line folded into a rectangular container, the volume of this container is how many cubic centimeters?
Length × width × height = (12-2 × 2) × (9-2 × 2) × 2 = 80cm and 179;
A square with an area of 1 hectare is several meters long, so how many square meters is 1 hectare? Thank you,
One hectare is 10000 square meters, with a side length of 100 meters
The perimeter of a square is 4 / 7 meters. How long is its side?
The perimeter of a square is 4 / 7 meters, and its side length is (4 / 7) / 4 = 1 / 7 meters
3 / 4 of 1 ookg is () kg. The side length of a square is 3 / 5 meters, the perimeter is several meters, and the area is several square meters
75 kg, perimeter is 2 and 2 / 5 meters, area is 5 / 9 square meters
A square with a circumference of 40 decimeters has an area of______ Square decimeter
(40 / 4) × (40 / 4), = 10 × 10, = 100 (square decimeter); answer: the area is 100 square decimeter
The circumference of a square tea table is 40 decimeters. How many square meters is its area?
40 divided by 4 = 10
Area 10 × 10 = 100 square decimeters
The circumference of a square tea machine is 40 decimeters. How many square meters is its area
40 times 40 equals 1600 square decimeters equals 16 square meters
A rope is 6.28 meters long, which is used to form a square and a circle______ The shape is large in area and large in size______ Square meters
Area of circle: 3.14 × (6.28 △ 3.14 △ 2) 2, = 3.14 × 12, = 3.14 (square meter), area of square: 6.28 △ 4 = 1.57 (meter), 1.57 × 1.57 = 2.4649 (square meter), 3.14-2.4649 = 0.6751 (square meter); answer: the area of circle is large, 0.6751 square meter
Use a piece of iron wire to form a circle with a radius of 4 decimeters. If you change it into a square, how many square decimeters is the area of the square? (keep one decimal place)
2 × 3.14 × 4 = 25.12 (decimeter), 25.12 △ 4 = 6.28 (decimeter), 6.28 × 6.28 ≈ 39.4 (square decimeter); answer: the area of a square is 39.4 square decimeter
RELATED INFORMATIONS
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- 2. A rectangular cardboard box, 10 cm long, 6 cm wide, 5 cm high, has 210 pieces of cardboard of 2 square meters, how many cartons can be made
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- 4. How much cardboard is needed to make 10 rectangular cartons with 81 square centimeter bottom area and 6 centimeter height
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- 8. Cut a small square with a side length of 4cm at the four corners of the square iron sheet to make a box without cover, with a surface area of 400cm2. Calculate the side length of the original iron sheet
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