Cylinder (बेलन) In Hindi
1. बेलन एक 3D आकृति है जिसमें दो समान वृत्ताकार आधार होते हैं। 2. आधारों को जोड़ने वाली एक घुमावदार आयताकार सतह होती है। 3. ऊंचाई, आधारों के बीच की दूरी होती है।Cylinder In English
A cylinder is a three-dimensional geometric solid that has two parallel circular bases and a curved lateral surface connecting them. The height is the distance between the two circular bases. It has a total of 3 faces, 2 edges, and no vertices.Cylinder Faces Vertices EdgesFaces: A cylinder technically has 3 faces. 1. Two are the circular areas at the top and bottom, which we can consider flat faces. 2. The third is the curved lateral surface that goes around the sides.Vertices: A cylinder has 0 vertices. Vertices are points where two or more edges meet. Since the cylinder’s curved side is smooth and has no corners, there are no points where edges come together.Edges: A cylinder has 2 edges. These are the circular lines where the top and bottom flat faces meet the curved lateral surface.Cylinder Formulas- Volume of a cylinder (V) = πr²h
- Surface area of a cylinder (CAS) = 2πrh
- Total Surface Area of a cylinder (TSA) = 2πrh + 2πr² = 2πr(h + r)
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