Math Problem Statement
Use the general slicing method to find the volume of the following solid. The solid with a semicircular base of radius 1 whose cross sections perpendicular to the base and parallel to the diameter are squares Question content area bottom Part 1 The volume of the solid is enter your response here cubic units.
Solution
To find the volume of the solid with a semicircular base of radius 1, where cross-sections perpendicular to the base and parallel to the diameter are squares, we'll use the general slicing method.
Steps:
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Understanding the base: The base of the solid is a semicircle of radius 1. The equation of the semicircle can be expressed as: This represents the upper half of a circle with radius 1, centered at the origin.
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Square cross-sections: For each value of , the cross-section perpendicular to the x-axis is a square. The side length of this square is equal to the vertical distance between the top of the semicircle and the x-axis, which is . Therefore, the side length of the square at a given is:
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Volume of a thin slice: The area of the square at position is:
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Integrating to find the volume: The volume is obtained by integrating the area of the cross-sections along the x-axis, from to :
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Evaluating the integral: Let's break it down: We can split the integral: First, solve each integral:
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Final Calculation: Now substitute these values into the volume equation:
Thus, the volume of the solid is:
Would you like further details or clarifications on any step?
Here are 5 related questions:
- How would the volume change if the cross-sections were equilateral triangles instead of squares?
- What is the method for finding the volume of a solid with a circular base and triangular cross-sections?
- Can you explain how the formula for the area of a semicircle is derived?
- How does the slicing method apply to finding the surface area of solids?
- What would happen to the volume if the radius of the semicircle were increased to 2?
Tip: Always visualize the shape and cross-sections to understand how to set up your integrals more effectively!
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Math Problem Analysis
Mathematical Concepts
Integral Calculus
Volume by Slicing
Definite Integrals
Cross-sectional Area
Formulas
Equation of a semicircle: y = sqrt(1 - x^2)
Cross-section side length: s(x) = 2 * sqrt(1 - x^2)
Cross-section area: A(x) = (2 * sqrt(1 - x^2))^2 = 4(1 - x^2)
Volume integral: V = ∫_{-1}^{1} 4(1 - x^2) dx
Theorems
Definite Integral Theorem
Volume by Slicing Method
Suitable Grade Level
Undergraduate Calculus / Advanced High School Calculus
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