Math problem in sixth grade (volume problem of cone)

Circumference =2 times radius times 3. 14. Circular area =3. 14 times the square of radius. Calculate the cone bottom radius =1m. Volume of cone = area of bottom times height divided by 3 = 9.42m? Volume of cylinder = area of bottom multiplied by height. So the height =9.42 divided by 6.28 =1.5m. ..

Assume that the area of a cylindrical cone is a, the height is b, and the volume of the cylinder =ab. The volume of the cone =ab/3. It is known that ab-ab/3= 1.8 cm2. Ab=2.7. The sum of the two volumes =ab+ab/3=4ab/3=3.6 square centimeters.

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