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Cut a cylinder into the largest cone. The volume of the cylinder is 18.84 cubic centimeter. The volume of the cylinder is () cubic centimeter A. 18.84B. 9.42C. 28.26D. 37.68
A: the volume of the cylinder is 28.26 cubic centimeter, so C
Mathematics problems of grade 6 in primary school [cylinder] [cone]
A cone is completely immersed in a cylindrical bucket with a bottom radius of 2 mm. When the cone is taken out, the water surface drops by 3 cm. What is the volume of the cone?
The volume of the falling water is the volume of the cone. 2DM = 20cm
Volume of falling water: 3.14 × 20 × 20 × 3 = 3768 (cm3)
So the volume of the cone is the above formula and the result. In addition, in primary school calculation problems, π is generally taken as 3.14
Two difficult sixth grade math problems (about cylinder and cone)
1. A cone-shaped wheat pile has a circumference of 6.28 meters at the bottom and a height of 4.5 meters. Put the wheat into a cylindrical grain bin with a radius of 2 meters at the bottom. How high is the wheat in the bin?
2. A cylindrical sand pile has a bottom area of 12.56 square meters and a height of 1.2 meters. With this pile of sand, how many meters can it be paved on a 10 meter wide road with a thickness of 2 meters?
To write the question number, list the formula
I suggest that you don't answer such questions in the future. They are all children and should study hard. When there are questions that you can't do, you can apply for a number and send them a question. We should help each other, but we should educate them better. So please don't answer such questions in the future and ask those to come up to find the answers
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