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If the area of a diamond is 12 cm2 and the length of its two diagonals is ACM and BCM respectively, then the functional relationship between a and B is a = 1___ The graph of this function is at___ Quadrant
According to the area formula of diamond, if AB = 24, then a = 24b, ∵ a > 0, b > 0, the image of this function is in the first quadrant
The side length of a square is a, and the ratio of side length to perimeter is a______ What is the ratio of side length to area______ ．
The side length of a square is a, the ratio of side length to perimeter is a: 4A = 1: 4; the ratio of side length to area is a: A2 = 1: a
If the perimeter of a square is ACM and the area is ACM, then its diagonal length is 4C
If the perimeter of a square is ACM and the area is acm2, then its diagonal length is?
Why?
The perimeter of a square is ACM and the side length is a / 4
a/4*a/4=a
a^2-16a=0
a(a-16)=0
A = 16 or 0, (rounding)
Side length: 16 / 4 = 4
Therefore, the diagonal length is: root (4 ^ 2 + 4 ^ 2) = 4 root 2
RELATED INFORMATIONS
- 1. If an external angle of an isosceles triangle is known to be 120 degrees, then it is () A. Isosceles right triangle B. general isosceles triangle C. equilateral triangle D. isosceles obtuse triangle
- 2. If the ratio of the two sides of an isosceles triangle is 1:2 and the circumference is 15cm, the length of its bottom is () cm and the length of its waist is () cm
- 3. If the vertex angle of an isosceles triangle is 120 ° and the length of the contour line at the bottom is 1cm, then its waist length is______ cm
- 4. If the height on the bottom of an isosceles triangle is 3cm and the waist length is 3cm, the vertex angle is degree
- 5. The waist length of an isosceles triangle is 2, the vertex angle is 120 ° and the area of its circumcircle is calculated As the title
- 6. If the waist length of an isosceles triangle with a vertex angle of 120 ° is 4cm, the diameter of its circumscribed circle is smaller______ cm．
- 7. A right triangle, two of which are 6cm and 8cm respectively, is rotated along the hypotenuse 10cm for one circle to get a body of revolution?
- 8. As shown in the figure, the middle angle ACB of triangle ABC is equal to 90 degrees, CA is equal to 15cm, CB is equal to 20cm, and the circle C with Ca as the radius intersects AB at d to find the length of AD
- 9. Draw the largest square in a right triangle. The known bottom is 10cm and the height is 30cm. Find the side length of the square Draw the largest square in a right triangle. The known bottom is 10cm and the height is 30cm. Find the side length of the square,
- 10. It is known that AB and CD intersect on O, m and N on AB, and AC = BD, am = BN, DM = CN
- 11. The length, width and height of a cuboid are ACM, BCM and HCM respectively. If the height is increased by 2cm, its volume will be increased by () cubic centimeter. The formula divides 35 into the sum of two prime numbers, and there are () kinds of methods. The square building block with the volume of 37 cubic centimeter occupies () area on the table
- 12. The length, width and height of a cuboid are ACM, BCM and HCM respectively. If the height is increased by three centimeters, how much more is the volume of the new cuboid than that of the original cuboid? It's written in letters. It's written in formulas
- 13. If a + B = 7cm and A-B = 3cm, find the difference of their surface areas
- 14. If the length of a rectangle increases by 4cm and the width decreases by 1cm, the area remains unchanged; if the length decreases by 2cm and the width increases by 1cm, the area remains unchanged, the area of the rectangle is______ ．
- 15. If the length of a rectangle increases by 4cm and the width decreases by 1cm, the area remains unchanged; if the length decreases by 2cm and the width increases by 1cm, the area remains unchanged, the area of the rectangle is______ ．
- 16. Is the shape of the earth like an apple or a ping-pong ball
- 17. Proof: table tennis is as big as the earth
- 18. Find the perimeter of inscribed regular decagon with radius of 10cm
- 19. The radius of the earth is 6370 km, and the radius of table tennis is about 2 cm. Using scientific notation, the radius of table tennis is a fraction of the radius of the earth-- Results two significant numbers are retained
- 20. If the perimeter of a square is 2bcm and the length of a rectangle equal to its perimeter is ACM, what is the width of the rectangle?