Math Problem Statement

What is the volume of this pyramid in cubic inches, given that the base is a triangle with a base length of 6 inches, height of the base is 5 inches, and the height of the pyramid is 8 inches?

Solution

To solve this problem, let's analyze the information given and apply the formula for the volume of a pyramid.

The formula for the volume of a pyramid is: V=13BhV = \frac{1}{3} B h where BB is the area of the base of the pyramid, and hh is the height.

Step-by-Step Solution

  1. Identify the Base of the Pyramid: The base of this pyramid is a triangle with a base of 6 inches and a height of 5 inches.

  2. Calculate the Area of the Base (B): The area BB of a triangle is given by: B=12×base×heightB = \frac{1}{2} \times \text{base} \times \text{height} Substituting the given values: B=12×6×5=15 square inchesB = \frac{1}{2} \times 6 \times 5 = 15 \text{ square inches}

  3. Identify the Height (h) of the Pyramid: The height of the pyramid is given as 8 inches.

  4. Calculate the Volume (V): Now, plug B=15B = 15 and h=8h = 8 into the volume formula: V=13×15×8=13×120=40 cubic inchesV = \frac{1}{3} \times 15 \times 8 = \frac{1}{3} \times 120 = 40 \text{ cubic inches}

Answer

The volume of the pyramid is 4040 cubic inches.

Would you like more details or have any other questions?

Here are five related questions to deepen understanding:

  1. How would the volume change if the height of the pyramid were doubled?
  2. What is the effect on the volume if the base's dimensions are increased by a factor of 2?
  3. How is the volume affected if the height remains the same but the base is changed to a different shape?
  4. Can the formula for the volume of a pyramid apply to any type of base, not just triangular ones?
  5. How would you calculate the volume if the pyramid were only partially filled?

Tip: Always ensure that the units of all dimensions match when calculating volume.

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Math Problem Analysis

Mathematical Concepts

Geometry
Volume of a Pyramid
Area of a Triangle

Formulas

Volume of a pyramid: V = (1/3) * B * h
Area of a triangle: B = (1/2) * base * height

Theorems

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Suitable Grade Level

Grades 7-9