Math Problem Statement

Answers to choose: 767.25 cm^ 3 31.25 cm^ 3 330 in^ 3 80 cm^3 5 390 m^3

Find the volume of the pyramid with a rectangular base of 8 cm by 3 cm and a height of 10 cm.

Solution

To find the volume of the pyramid in the image, we can use the formula for the volume of a pyramid:

V=13×B×hV = \frac{1}{3} \times B \times h

Where:

  • VV is the volume.
  • BB is the area of the base.
  • hh is the height of the pyramid (perpendicular distance from the base to the apex).

Step 1: Calculate the Area of the Base

The base of this pyramid is a rectangle with dimensions:

  • Length l=8cml = 8 \, \text{cm}
  • Width w=3cmw = 3 \, \text{cm}

The area of the base BB is:

B=l×w=8cm×3cm=24cm2B = l \times w = 8 \, \text{cm} \times 3 \, \text{cm} = 24 \, \text{cm}^2

Step 2: Use the Pyramid Volume Formula

The height hh of the pyramid is given as h=10cmh = 10 \, \text{cm}.

Now, using the volume formula:

V=13×24cm2×10cmV = \frac{1}{3} \times 24 \, \text{cm}^2 \times 10 \, \text{cm}

Let me calculate the result for you.The volume of the pyramid is 80cm380 \, \text{cm}^3.

Would you like more details or have any further questions?

Here are 5 related questions for further exploration:

  1. How would the volume change if the height was doubled?
  2. What would happen to the volume if the base was a square instead of a rectangle?
  3. Can the same formula for the volume be applied to a cone? If so, how?
  4. How is the surface area of this pyramid calculated?
  5. How would the volume change if the base dimensions were halved?

Tip: For any pyramid, as long as the base is a polygon (not necessarily a rectangle), you can use the same volume formula—just make sure to calculate the correct area of the base.

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Math Problem Analysis

Mathematical Concepts

Geometry
Volume of Pyramids

Formulas

Volume of a Pyramid: V = (1/3) * B * h
Area of a Rectangle: B = l * w

Theorems

Pyramid Volume Theorem

Suitable Grade Level

Grades 6-8