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Hmmm ... That is the best way to build it.
A circle is the shape which encloses the maximum area for a given perimeter, so you would use less material for the wall.
If something has pressure from the inside, it will take the form of a circle. Similarly, when you blow up a balloon, it takes the shape of a sphere.
If the cross section were say, a square, the walls would bow out (unless they were very strong), and tend to make a circular shape.
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What is the difference between a cylinder and a cuboid?
A cylinder has a circular cross-section whereas a cuboid has a quadrilateral cross-section.
Can the cross section of a cuboid be a trapezium?
Not a right cross-section.
How is a sphere is different form an ellipse?
A sphere is three-dimensional whereas an ellipse is two-dimensional. An ellipse can have an oval shape but a cross section of a sphere is always circular.
Can a cube have an octagonal cross section?
No, a cube cannot have an octagonal cross-section.
What Is a cross section of a rectangular prism?
The cross section can be a triangle, rectangle or a hexagon.
What has a circular cross section when the cross section is taken parallel?
A cylinder has a circular cross section that is parallel to its base.
What is the shape of the cross-section of a circular cylinder?
a circle
What is the difference between a cylinder and a cuboid?
A cylinder has a circular cross-section whereas a cuboid has a quadrilateral cross-section.
What is the difference between a cylinder and a rectangular prism?
A cylinder has a circular cross section, a rectangular prism has a rectangular cross section.
How is a rectangular prism and a cylinder different?
A rectangular prism has a rectangular cross section whereas a cylinder has a circular cross section
What is the difference between a cylinder and an a square prism?
A cylinder has a circular cross section, a square prism has a square cross section.
What does cone cylinder and a sphere have in common?
A circular cross-section.
What shape is cross section of a cone?
Circular when looking up at it
What is the similarity among spheres cones and cylinders?
A circular cross-section.
What is the radius of a cylinder?
The radius of a cylinder is half the thickness of its circular cross section.
Is the cross section of hollow cylider is called annulus?
Yes. An annulus is a circular disc with a concentric circular disc cut out of it.
What is the significance of stepped core?
A transformer's windings are pre-wound around insulated 'formers' or tubes of circular cross section. To achieve maximum flux density, the core should ideally be of circular cross-section, too. A 'stepped core', then, describes the way in which the widths of the outer laminations of a transformer's core are progressively reduced ('stepped') in order to achieve a roughly-circular cross-section.
