The three sides of a right triangle are 6 cm, 8 cm and 10 cm long respectively. What shape can be obtained by rotating the two right sides for one circle? What's the maximum volume of it?

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• 1. The two right sides of a right triangle are 6cm and 10cm long respectively. What shape and volume can be obtained by rotating the right side of 10cm as an axis for one circle What's the volume, the formula
• 2. The diameter of the bottom surface of the cone is 10 cm, and the volume is 235.5 cm cubic. What is the height of the cone?
• 3. The two right sides of a right triangle are 3cm and 5cm respectively. If the long side of the right triangle is taken as the axis and the short side is taken as the axis, a triangle can be obtained by rotating the triangle for one circle______ They are different in volume______ Cubic centimeter
• 4. Unfold the side wrapping paper of a cylindrical food can to get a square. The bottom radius of the cylindrical can is 5cm, and the height of the cylinder is 5cm______ (expressed in π)
• 5. The base area and volume of cuboid, cylinder and cone are equal respectively. If the height of cylinder is 5cm, the height of cuboid is () cm, and the height of cone is () cm（
• 6. The average number of a, B and C is 72, and the ratio of a, B and C is 3 ∶ 4 ∶ 5. What are the numbers of a, B and C? 20 points online Clock, etc
• 7. 3 / 4 of the number a is equal to 6 / 5 of the number B. the number a is larger than the number B. if the number B is 18, the number a is ()
• 8. A, B and C make a total of 940 parts at the same time. It takes 5 minutes for a to make one, 25% more than that for B, and 2 / 5 less than that for a, respectively I can answer this question, but I don't understand why B takes 5 / (1 + 25%) = 4 minutes more than 25% is not B, not 5-5x25%
• 9. The quality of grain stored in warehouse A and warehouse B is equal. After 8 tons of grain is taken from warehouse A and put into warehouse B, the quality ratio of grain stored in warehouse A and warehouse B is 4:5? (please use proportion solution)
• 10. The experimental primary school held a group performance on campus. The ratio of the number of participants in grade 3, 4 and 5 was 2:5:3. It is known that the number of participants in grade 3 was 46. How many participants in grade 4 and 5? Although there is no point! But I hope you can have a warm heart! Please list the formula
• 11. As shown in the figure, circle O is the circumscribed circle of triangle ABC  
• 12. It is known that in the triangle ABC, D is a point of BC, De is perpendicular to AB and DF is perpendicular to AC and F, and De is equal to DF. What is the relationship between AD and ef D is a point on BC. I have the wrong number
• 13. As shown in the figure: in △ ABC, D is the point on BC, de ⊥ Ba is in E, DF ⊥ AC is in F, and de = DF? And explain the reason
• 14. As shown in the figure: in △ ABC, D is the point on BC, de ⊥ Ba is in E, DF ⊥ AC is in F, and de = DF? And explain the reason
• 15. As shown in the figure, in △ ABC, ab = AC, EB = BD = DC = CF, ∠ a = 40 °, then the degree of ∠ EDF is______ Degree
• 16. In the triangle ABC, ab = AC, point D is on AC, and BD = BC = ad, De is the middle line of the triangle abd, and DF = BF, find the degree of ∠ EDF
• 17. It is known that in the triangle ABC, the angle a is equal to 50 ° and DEF is the point on BC AB AC, DB= de.dc=df , find the angle EDF
• 18. In △ ABC, ab = AC, D is a point on BC, de ⊥ AB and E, DF ⊥ BC, intersection AC and F, ∠ AFD = 160 °, find the degree of ∠ A and ∠ EDF RT
• 19. As shown in the figure, in △ ABC, BD bisects ∠ ABC, de ‖ BC intersects AB at point E, EF ‖ AC intersects BC at point F. try to guess the size relationship between be and CF, and explain the reasons, as shown in figure.doc
• 20. As shown in the figure, △ ABC, D is the midpoint of BC, e and F are two points on the edge of AB and AC respectively, ed ⊥ FD, which proves that be + CF > EF