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?

The longer is the right angle and the side is 9 cm
So the height is: 9 cm
Bottom radius: 6cm
The bottom area is: 3.14 × 6-178; = 113.04 square centimeter
The volume is: 113.04 × 9 △ 3 = 339.12 cubic centimeter
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