Math Problem Statement

Sebuah tempat air berbentuk balok dibuat model berukuran 8 cm × 6 cm × 2 cm menggunakan skala 1 : 100. Volume tempat air tersebut adalah ...

Solution

The problem in the image asks to find the volume of a water container shaped like a rectangular block, given that the model's dimensions are 8 cm × 6 cm × 2 cm, and the scale is 1:100.

Steps to solve:

  1. Model's Volume Calculation: The volume VmodelV_{\text{model}} of the model is calculated by multiplying the length, width, and height of the model: Vmodel=8cm×6cm×2cm=96cm3V_{\text{model}} = 8 \, \text{cm} \times 6 \, \text{cm} \times 2 \, \text{cm} = 96 \, \text{cm}^3

  2. Scale Adjustment: The scale given is 1:100, which means the actual container is 100 times larger in each dimension. Since volume scales with the cube of the scaling factor: Volumeactual=Vmodel×(100)3=96×1,000,000=96,000,000cm3\text{Volume}_{\text{actual}} = V_{\text{model}} \times (100)^3 = 96 \times 1,000,000 = 96,000,000 \, \text{cm}^3

  3. Convert to Liters: Since 1 liter = 1,000 cm³, the volume in liters is: Volume in liters=96,000,0001,000=96,000liters\text{Volume in liters} = \frac{96,000,000}{1,000} = 96,000 \, \text{liters}

So, the correct answer is 96,000 liters, which corresponds to option E.

Would you like more details or further clarification? Here are five related questions to expand your understanding:

  1. How do you calculate volume for different geometric shapes, such as spheres or cylinders?
  2. What is the significance of using a scale in model-based problems?
  3. How does volume scale with respect to changes in dimensions?
  4. What are some practical applications of scaling in real-world engineering and design problems?
  5. How can you convert between different units of volume, such as cubic meters to liters?

Tip: When working with scales in volume, always remember to cube the scale factor if the object is 3-dimensional!

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Math Problem Analysis

Mathematical Concepts

Volume of Rectangular Prisms
Scale Factor
Unit Conversion

Formulas

V = l × w × h
Scale Factor Volume: V_actual = V_model × (scale factor)^3
1 liter = 1,000 cm³

Theorems

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Suitable Grade Level

Grades 7-9