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If the expanded side area of a cylinder is square, the height of the cylinder is () 1、 2 times 2、 4 times 3、 Paibei
If the side expansion is square, the circumference of the bottom of the cylinder is equal to the height of the cylinder
Circumference L = π * diameter
Height h = L = π * diameter
So it's three PI times
If the bottom area of a cylinder is s and the side view is a square, then the side area of the cylinder is ()
A. πSB. 2πSC. 4πSD. 233πS
The bottom area of the cylinder is s, so the radius of the bottom is s π, and the perimeter of the bottom is 2 s π; ∵ the side expansion is a square, so the height of the cylinder is 2 s π, so the side area of the cylinder is: (2 s π) 2 = 4 π s, so C is selected
RELATED INFORMATIONS
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