Math Problem Statement

Write the formula to calculate the height, h, of a cone given the volume, radius, and height.

Solution

The formula given for the volume VV of a cone is:

V=13πr2hV = \frac{1}{3} \pi r^2 h

where:

  • VV is the volume,
  • rr is the radius of the base,
  • hh is the height,
  • π\pi is the constant Pi (approximately 3.14159).

You are asked to solve for the height hh in terms of VV, rr, and π\pi.

To isolate hh, follow these steps:

  1. Start with the formula for the volume of the cone: V=13πr2hV = \frac{1}{3} \pi r^2 h
  2. Multiply both sides of the equation by 3 to eliminate the fraction: 3V=πr2h3V = \pi r^2 h
  3. Divide both sides by πr2\pi r^2 to solve for hh: h=3Vπr2h = \frac{3V}{\pi r^2}

Thus, the formula for the height hh is:

h=3Vπr2h = \frac{3V}{\pi r^2}

Would you like more details or clarifications?

Here are 5 related questions to expand your understanding:

  1. How does the volume change if the radius is doubled but the height remains the same?
  2. Can you derive the volume formula for other 3D shapes like cylinders or spheres?
  3. How would you calculate the volume if only the slant height and radius were given?
  4. What happens to the volume if both the height and radius of the cone are halved?
  5. How would you compute the volume of a frustum (a truncated cone)?

Tip: When manipulating formulas, always perform the same operation on both sides of the equation to maintain equality.

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Math Problem Analysis

Mathematical Concepts

Geometry
Algebra
Volume of 3D shapes

Formulas

V = (1/3)πr^2h
h = (3V)/(πr^2)

Theorems

Formula for the volume of a cone

Suitable Grade Level

Grades 9-12