The length of three sides of a right triangle is 3, 4 and 5. If each side is rotated for one circle, what geometry is obtained? What are their volumes

The length of three sides of a right triangle is 3, 4 and 5. If each side is rotated for one circle, what geometry is obtained? What are their volumes


When we rotate with 3 and 4 sides, we get a cone,
At 3, the volume is the area of the bottom circle, that is, π * 4 * 4, and the volume is 3 * 4 * 4 * π,
When you rotate with 4, the volume is the area of the bottom circle, that is, π * 3 * 3, and the volume is 4 * 3 * 3 * π,
Rotating at 5 is two cones with the same base,
The height of the right triangle is 12 / 5 and the volume of the upper part is π * 12 / 5 * 12 / 5 * 16 / 5
Volume of lower part π * 12 / 5 * 12 / 5 * (5-16 / 5)
As a result, I didn't count. Hey hey, do it yourself



If the two right sides of a right triangle are 5 cm and 3 cm long respectively, what is the base area of the cone obtained by rotating around the short side
Square centimeter, what's the height


The base area is π * 5 & # 178; = 25 π square centimeter
The height is three centimeters



Rotate a right triangle side of a right triangle for one circle to get a cone. How to rotate to get the maximum area of the bottom of the cone
The third is 3cm, the second is 4cm, the longest is unknown


Square of 3.14 * 4 = 50.24