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A circle with a circumference of 6.28dm can be divided into several equal parts to form a parallelogram. The bottom of the parallelogram is equivalent to______ Yes______ The height of a parallelogram is equal to______ Yes______ cm．
Divide a circle into several equal parts to form a parallelogram. The bottom of the parallelogram is equal to half of the circumference of the circle, and the height is equal to the radius of the circle. The bottom of the parallelogram is 6.28 △ 2 = 3.14 (CM). The height of the parallelogram is 6.28 △ 3.14 △ 2 = 2 △ 2 = 1 (CM). So the answer is: half of the circumference of the circle, 3.14, radius of the circle, 1.14
Given that the perimeter of a parallelogram is 30 and the ratio of two adjacent sides is 2:3, the value range of diagonal length x is____ .
More than three but less than fifteen. Do you need a process
If the perimeter of parallelogram ABCD is 32,5ab = 3bC, the value range of diagonal AC is?
7. Take two of the three lines of 5cm, 4cm and 7cm in length as the side and the other as the diagonal to draw parallelogram. The number of parallelogram with different shapes can be drawn is ()
A.1 B.2 C.3 D.4
If the root 4A + 1 is meaningful, then the smallest integer a can take is?
The perimeter is 32, indicating that the sum of a set of adjacent edges is 16
AB and BC are a set of adjacent edges
AB+BC=16
By substituting 5ab = 3bC, that is, ab = 3 / 5BC
AB=6.BC=10
The value range of diagonal AC is 4
RELATED INFORMATIONS
- 1. If the perimeter of parallelogram ABCD is 32,5ab = 3bC, the value range of diagonal AC is ()
- 2. As shown in the right figure, in the parallelogram ABCD, we know that ad = 8 and perimeter is equal to 24, then we find the lengths of the other three sides
- 3. As shown in the figure, ▱ the diagonal lines AC and BD of ABCD intersect at point O, point E is the midpoint of CD, and the perimeter of △ abd is 16cm, then the perimeter of △ DOE is______ cm．
- 4. In triangle ABC, angle B = angle c = 36 degrees, angle ade = angle ade = 72 degrees, then the number of isosceles triangles in the graph is?
- 5. For a piece of land as shown in the figure, ad = 12M, CD = 9m, ∠ ADC = 90 °, ab = 39m, BC = 36m, calculate the area of this land
- 6. For a piece of land as shown in the figure, ad = 12M, CD = 9m, ∠ ADC = 90 °, ab = 39m, BC = 36m, calculate the area of this land
- 7. In the quadrilateral ABCD, ab ∥ CD, AC bisects ⊥ DAB, ad = BC, AC ⊥ BC, ⊥ DAB = ⊥ B, ab = 4cm
- 8. A cuboid of 7cm in length, 6cm in width and 5cm in height is cut into two equal cuboids so that the sum of the surface areas of the two cuboids is the largest What's the maximum? What's the minimum? (to be comprehensive)
- 9. Cut a cuboid of 7cm in length, 6cm in width and 5cm in height into two cuboids so that the two cuboids have the largest surface area. What is the sum of the surface products of the two cuboids
- 10. It is known that there is a square side of a cuboid paperless box, and the length of two edges is 4cm and 5cm respectively. The surface area and volume of the box are calculated
- 11. It is known that the perimeter of a parallelogram is 20 cm. A diagonal divides it into two triangles with a perimeter of 16 cm. How many cm is the diagonal?
- 12. If the perimeter of parallelogram is 48mm and the diagonal intersects o, the perimeter of triangle AOB is 4mm longer than that of triangle BOC, then the lengths of AB and BC are equal to?
- 13. The diagonals AC and BD of parallelogram ABCD intersect at O, e and F, which are two points on DB, and de = BF I'm sorry to trouble you to copy it,
- 14. Known: as shown in the figure, the quadrilateral ABCD is a parallelogram, e and F are two points on the straight line BD, and de = BF. (1) prove: AE = CF; (2) connect AF and CE, then is the quadrilateral afce a parallelogram?
- 15. It is known that the perimeter of the parallelogram ABCD is 50cm, the diagonals intersect at point O, the perimeter of △ AOB is 5cm longer than that of △ BOC, and the lengths of AB and BC are calculated No picture
- 16. As shown in the figure, in ▱ ABCD, the diagonal AC = 21cm, be ⊥ AC, the perpendicular foot is e, and be = 5cm, ad = 7cm, then the distance between AD and BC is______ cm．
- 17. There is a little E in the quadrilateral ABCD,
- 18. In trapezoidal ABCD, AD / / BC, ∠ ABC = 60 °, DCB = 30 °, ab = 4, BC-AD is calculated
- 19. In trapezoidal ABCD, ad ∥ BC, ab = 4, BC = 9, CD = 5, Da = 6. (1) prove ab ⊥ BC; (2) find the area of trapezoidal ABCD
- 20. As shown in the figure, in trapezoidal ABCD, ∠ d = 90 ° and M is the midpoint of ab. if cm = 6.5 and BC + CD + Da = 17, the area of trapezoidal ABCD is () A. 20B. 30C. 40D. 50