The three sides of a right triangle are 3cm, 4cm and 5cm respectively. The height of its hypotenuse is () cm

3*4/5=2.4

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1. The two right sides and hypotenuse of a right triangle are 3cm, 4cm and 5cm respectively?
2. The three sides of a right triangle are 3cm 4cm 5cm. The area of the triangle is the square of () cm, and the height of the hypotenuse is () cm?
3. The hypotenuse of a right triangle is 100cm, one is 60cm, and the other is 80cm. How high is the hypotenuse? Because I am only a primary school student.
4. The perimeter of a right triangle is 60cm, the shortest side is 15cm, and the largest side is 15cm Second, given that the sum of the two right sides of a right triangle is 34 cm, and the difference between the two right sides is 14 cm, what is the area of the triangle?
5. The lengths of the two right sides of a right triangle are 60cm and 80cm respectively. Find the perimeter of the right triangle and the height on the hypotenuse
6. The lengths of the two right sides of a right triangle are 60cm and 80cm respectively. Find the perimeter of the right triangle and the height on the hypotenuse,
7. The two right sides of a right triangle are 60cm and 80cm respectively. How many square centimeters is its area? The hypotenuse of this triangle is 100cm long. How high is the hypotenuse?
8. The two right sides of a right triangle are 60cm and 80cm respectively
9. As shown in the figure, in the linear triangle ABC, ∠ C = 90 °, BD is the angular bisector of △ ABC, be is the angular bisector of △ BDA, DF is the height of △ BDE
10. In the triangle ABC, ab = AC, BD = DC, take any point E in ad to judge the relationship between be and EC
11. A piece of hard paper of right triangle with two right sides of 5cm and 8cm respectively. The volume of three-dimensional figure can be obtained by rotating one right side of it as an axis The biggest is
12. As shown in the figure, the two right angles of a right triangle paperboard are 4cm and 3cm long respectively. Now, take the right angle of 4cm long as the axis to rotate for a circle, and the volume of the three-dimensional figure is______ Cubic centimeter (results retain π)
13. A right triangle, two right angles are 6 cm and 9 cm respectively, with the longer right side as the axis symmetry, how much is the volume of the cone?
14. 1. A right triangle, the length of the two right sides are 6 cm and 8 cm respectively, with a right side as the axis, rapid rotation, you can get a cone, what is the maximum volume of the cone? 2. A cylindrical timber is 3 meters long. After it is cut into two small columns, the surface area increases by 12.56 square decimeters. What is the volume of the original column?
15. A right triangle, the length of the two right sides are 10 cm and 6 cm respectively. Take the two right sides as the axis to rotate one circle, get two cones, which one What's the volume of a cone?
16. If you rotate a right side of a right triangle as an axis, you will get a cone. How to get the maximum area of the bottom of the cone?
17. There is a mathematical problem: the length of three sides of a right triangle is 3, 4 and 5. If you rotate each side as an axis for one circle, what geometry will you get? What are their volumes?
18. The lengths of three sides of a right triangle are 3, 4 and 5 respectively. If each side is rotated one circle, three solid figures are obtained Find the ratio of the largest volume to the smallest volume in the three solid figures
19. A right triangle with three sides of 3cm, 4cm and 5cm is rotated around the shortest right side to get a right triangle______ And its volume is______ ．
20. The surface area of the geometric figure obtained by rotating the rectangle with the side length of 2cm and 4cm around one side is?