Circle with square cross sections

In summary, the solid described has a circular base with a radius of 2r and parallel cross-sections that are squares. To find the volume of this solid, one can draw a sketch of it and use the fact that the maximum square is on the x-axis and the sizes of the squares decrease as you move away from the x-axis.
  • #1
nomathwiz
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Homework Statement



The base of S is a circular disk with radius 2r. Parallel cross-sections perpendicular to the base are squares.
Find the volume V of this solid.


Homework Equations





The Attempt at a Solution



I'm clueless
 
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  • #2
Draw a sketch of the 3D solid in this way.
Draw a circle of radius 2r (so diameter is 4r), with its center at (0, 0).
Draw several line segments across the circle, and parallel to the x-axis from one side to another. For each of these line segments, draw a square whose height is equal to its width. If you think about it, the maximum square will be on the x-axis, and the sizes of the squares taper off as you go up or down the y-axis.
Does that help?
 

1. What is a "Circle with square cross sections"?

A "Circle with square cross sections" is a three-dimensional object that appears as a circle when viewed from one direction and a square when viewed from another direction. This shape is commonly used in geometry and engineering.

2. How is a "Circle with square cross sections" formed?

A "Circle with square cross sections" is formed by taking a cylinder and cutting it into slices that are perpendicular to the base. Each of these slices is a perfect circle, and when viewed together, they create the illusion of a circle with square cross sections.

3. What are some real-life applications of "Circle with square cross sections"?

"Circle with square cross sections" can be seen in various structures and objects such as pipes, columns, and towers. It is also commonly used in architecture and design, as well as in the construction of bridges and tunnels.

4. How is the volume of a "Circle with square cross sections" calculated?

The volume of a "Circle with square cross sections" can be calculated by taking the area of the base (the circle) and multiplying it by the height of the shape. This can be represented by the formula V=πr²h, where r is the radius of the circle and h is the height of the shape.

5. What are the benefits of using a "Circle with square cross sections" in construction?

Using a "Circle with square cross sections" in construction can provide increased strength and stability to structures. This shape also allows for efficient use of materials and can reduce the overall weight of the structure. Additionally, the circular shape can help distribute weight and pressure evenly, making it ideal for supporting heavy loads.

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