Math Problem Statement

Calculate the volume of the frustum. If your answer is a decimal, give it to 1 d.p.

Solution

The image shows a frustum with the following details:

  • Height of the frustum, h=54h = 54 cm.
  • Area of the top of the frustum, A1=10A_1 = 10 cm².
  • Area of the base of the frustum, A2=90A_2 = 90 cm².

To calculate the volume of the frustum, we use the formula for the volume of a frustum of a pyramid or cone:

V=h3×(A1+A2+A1×A2)V = \frac{h}{3} \times \left( A_1 + A_2 + \sqrt{A_1 \times A_2} \right)

Where:

  • VV is the volume of the frustum.
  • hh is the height.
  • A1A_1 and A2A_2 are the areas of the top and base, respectively.

Let's calculate the volume using this formula.The volume of the frustum is 2340.0cm32340.0 \, \text{cm}^3.

Would you like any further details or have any questions?

Here are 5 related questions to explore:

  1. How do you calculate the volume of a cone if the frustum had no top?
  2. What is the difference between a frustum of a pyramid and a frustum of a cone?
  3. How does the formula for the volume of a frustum change if the shape is a cylinder?
  4. Can the surface area of this frustum be calculated, and how?
  5. What happens to the volume if the height of the frustum is doubled?

Tip: Always check if the areas provided are for the faces parallel to the base and top when using this formula.

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Math Problem Analysis

Mathematical Concepts

Geometry
Volumes of 3D shapes
Frustums

Formulas

V = (h / 3) × (A_1 + A_2 + √(A_1 × A_2))

Theorems

Volume of a frustum of a pyramid or cone

Suitable Grade Level

Grades 9-12