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The height of a cylinder is () times the diameter of its base
14 times!
The bottom radius of a cylinder is R. the side expansion is a square. The height of the cylinder is () and the side area of the cylinder is ()
The height is the circumference of the bottom of the cylinder, 2R, and the side area is 2R * 2R
There is a cylindrical plasticine with a base area of 14 cm and a height of 6 cm. (1) if you shape it into a cone with the same base as the cylinder, how high is the cone
(2) If it is made into a cone equal to the height of a cylinder, what is the bottom area of the cone?
Write the complete formula and mark (1), (2)
(1) 18 cm high
14X6/[(1/3)X14]=18
(2) Bottom area=
14x6 / [(1 / 3) X6] = 52 cm2
A cylindrical plasticine has a bottom area of 12 square centimeters and a height of 15 centimeters. If you shape it into a cone of the same size as the bottom, the height of the cone is () centimeters
A. 15B. 45C. 5
Rubber clay volume: 12 × 15 = 180 (cm3), cone height: 180 × 3 △ 12 = 45 (CM); answer: cone height is 45 cm
RELATED INFORMATIONS
- 1. If the circumference of the bottom circle of the cone is 4 π cm and the generatrix length is 6cm, then the degree of the center angle of the expanded side area of the cone is 4 π cm_______
- 2. It is known that the generatrix length of a cone is 90cm, and the center angle of the side expanded view is 120, then the height of the cone is?
- 3. In the parallelogram ABCD, if M is any point of AB, then am − DM + DB equals () A. BCB. ABC. ACD. AD
- 4. It is known that in ▱ ABCD, e and F are the points on DC and ab respectively, and de = BF. It is shown that the quadrilateral EAFC is a parallelogram
- 5. Given that the side length of square ABCD is 2 and E is the midpoint of CD, what is the product of vector BD? And vector AE?
- 6. In the diamond ABCD with side length of 1, ∠ bad = 60 ° and E is the midpoint of BC, then the vector AE is multiplied by the vector AC
- 7. In rectangle ABCD, ab = 2, ad = 1, then vector AC × vector CD
- 8. It is known that in the quadrilateral ABCD, ab = ad = 4, BC = 6, CD = 2,3 vector AB * vector AD + 4 vector CB * vector CD = 0, we can find the circumcircle radius r of triangle ABC
- 9. If vector AB = vector DC, then ABCD is a parallelogram? Is that right? Maybe it's not collinear
- 10. As shown in the figure, the diagonals AC and BD of rectangle ABCD intersect at O, e and F are the midpoint of OA and ob respectively. (1) prove: △ ade ≌ △ BCF; (2) if ad = 4cm, ab = 8cm, find the length of CF
- 11. If the expanded side area of a cylinder is square, the height of the cylinder is () 1、 2 times 2、 4 times 3、 Paibei
- 12. The side view of the cylinder is a rectangle. The length of the rectangle is equal to the circumference of the bottom of the cylinder, and the width is equal to the height of the cylinder______ ．
- 13. The perimeter of a cylinder in the side view is 61.68 cm. The known height is twice the diameter of the bottom. The diameter of the bottom of the cylinder is______ Cm. (π = 3.14)
- 14. The volume difference between a cylinder and a cone is 50.24 & sup3;, if the bottom radius of the cylinder is 2cm, the side area of the cylinder is Centimeter?
- 15. It is known that the bottom radius of a cone is 2cm and the height is 6cm. In all its inscribed cylinders, the maximum area of the cylinder side is calculated
- 16. The side area of the cone is 15 π cm2 and the length of the generatrix is 5cm The side area of the cone is 15 π cm2 (2 is square), the generatrix length is 5cm, and the bottom radius of the cone is cm The total area is cm 2
- 17. Let the distance from the moving point P to the point F (1,0) be 1 / 3 of the distance to the straight line x = 9, find the trajectory equation of the point P, and judge what the trajectory is Be more detailed, thanks!
- 18. The ratio of the distance from the moving point P to the fixed point m and N is 2:1, and | Mn | = 3. The equation of the trajectory of point P is obtained by choosing an appropriate coordinate system Sincerely! Ah, I hope no more people like the one below will come in.
- 19. Given points a (radical 3, - 4), B (- 3, radical 3,8), if | PA | = | Pb |, prove that the moving point P is on a straight line 2. Find the intercept and inclination angle of the straight line in 1 on x-axis and y-axis
- 20. When the absolute value pa-pb of a (2,0) B (- 1, - 3) P is the largest on the y-axis, the coordinate of point P is