Math Problem Statement

A and B are two similar vases, not drawn to scale. The difference between the volume of vase A and the volume of vase B is 1197 cm³. Calculate the volume of vase A.

Solution

To solve this problem, let’s go through it step-by-step.

  1. Given Information:

    • The vases AA and BB are similar, meaning their shapes are the same, but their sizes are different.
    • The height of vase AA is 10cm10 \, \text{cm}, and the height of vase BB is 15cm15 \, \text{cm}.
    • The difference in volume between vase BB and vase AA is 1197cm31197 \, \text{cm}^3.
  2. Volume of Similar Shapes:

    • For similar shapes, the ratio of their volumes is the cube of the ratio of their corresponding linear dimensions (such as height).
    • The height ratio of vases AA and BB is: Height of BHeight of A=1510=32\frac{\text{Height of } B}{\text{Height of } A} = \frac{15}{10} = \frac{3}{2}
    • Therefore, the volume ratio will be: (32)3=278\left(\frac{3}{2}\right)^3 = \frac{27}{8}
  3. Setting Up Equations:

    • Let the volume of vase AA be VAV_A.
    • Then the volume of vase BB will be: VB=278VAV_B = \frac{27}{8} V_A
    • According to the problem, the difference in volume between BB and AA is 1197cm31197 \, \text{cm}^3: VBVA=1197V_B - V_A = 1197
    • Substituting VBV_B from above: 278VAVA=1197\frac{27}{8} V_A - V_A = 1197
  4. Solving for VAV_A:

    • Simplify the equation: 27VA8VA8=1197\frac{27V_A - 8V_A}{8} = 1197 19VA8=1197\frac{19V_A}{8} = 1197
    • Multiply both sides by 88 to isolate VAV_A: 19VA=1197×819V_A = 1197 \times 8 19VA=957619V_A = 9576
    • Divide by 1919 to solve for VAV_A: VA=957619=504cm3V_A = \frac{9576}{19} = 504 \, \text{cm}^3
  5. Conclusion:

    • The volume of vase AA is 504cm3504 \, \text{cm}^3.

Would you like further details on any specific step? Here are some related questions you might find interesting:

  1. How would the volume change if the heights of the vases were doubled?
  2. What is the volume of vase BB?
  3. Can this method be applied to other similar 3D objects, like cones or pyramids?
  4. How would the calculations change if only the width of the vases differed?
  5. What is the significance of the volume ratio in real-life applications?

Tip: When dealing with similar shapes, remember that areas scale by the square of the ratio, while volumes scale by the cube of the ratio.

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Math Problem Analysis

Mathematical Concepts

Similarity of Shapes
Ratio and Proportion
Volumes of Similar Solids

Formulas

Volume ratio of similar shapes = (Height ratio)^3
Volume of vase B = (Volume ratio) * Volume of vase A
Volume difference = Volume of vase B - Volume of vase A

Theorems

Similarity Theorem for Volumes

Suitable Grade Level

Grades 9-10