Traditional Culture Encyclopedia - Hotel franchise - There is a column in the lobby of the hotel, with a diameter of 4 cents and a height of 3 meters. The space occupied by this column is _ _ _ ______dm3. Oil this post.

There is a column in the lobby of the hotel, with a diameter of 4 cents and a height of 3 meters. The space occupied by this column is _ _ _ ______dm3. Oil this post.

3. 14×(4÷2)2×3,

=3. 14×4×3,

≈37.7 (cubic decimeter),

3. 14×4×3≈37.7 (square decimeter),

Answer: The space occupied by this cylinder is 37.7dm3, and the painting area of this column is 37.7m2.

So the answer is: 37.7; 37.7