Math Problem Statement

Diketahui bangun datar dengan luas masing-masing persegi panjang tampak pada gambar. Berapakah luas?

Solution

This problem is asking you to determine if the provided statements are sufficient to calculate the area of the rectangle depicted.

Step-by-step breakdown:

  1. Diagram Layout:

    • The figure shows a rectangle divided into two smaller rectangles:
      • One with dimensions 6×z6 \times z.
      • The other with dimensions x×yx \times y.
  2. Objective:

    • We need to determine the area of the entire figure (which is the sum of the areas of the two rectangles).

    The total area of the figure is given by: Total Area=(6×z)+(x×y)\text{Total Area} = (6 \times z) + (x \times y)

  3. Given Statements:

    • Statement (1): x=14x = 14
    • Statement (2): y=35y = 35
  4. Analysis:

    • To find the total area, we need both zz and yy. Knowing x=14x = 14 helps with one part, but it doesn’t directly tell us zz, the width of the first rectangle. Likewise, knowing y=35y = 35 only gives us the height of the second rectangle but doesn’t directly help us with zz either.

    Let's assess each option:

    Option A:

    • Statement (1) alone is not sufficient, as we still don't know zz, which is necessary to calculate the area of the first rectangle.
    • So, A is false.

    Option B:

    • Statement (2) alone is also insufficient because while it gives us yy, we still need zz to calculate the total area.
    • So, B is false.

    Option C:

    • Both statements together give x=14x = 14 and y=35y = 35, but we still don’t know the value of zz to compute the area of the first rectangle.
    • Thus, C is false.

    Option D:

    • This suggests that either statement is sufficient alone, but we’ve already determined both statements alone are insufficient.
    • D is false.

    Option E:

    • Neither statement is sufficient on its own or together, because we still lack information about zz.
    • Therefore, E is the correct answer.

Conclusion:

The correct answer is E. Neither statement alone nor together provides enough information to answer the question about the total area.

Let me know if you want further clarification or have additional questions!

Related questions:

  1. How do you calculate the area of a composite figure?
  2. What role does knowing both dimensions (length and width) play in calculating area?
  3. Can we infer the missing value zz with any additional information?
  4. How would the problem change if a total area were provided instead?
  5. Is there a specific property of rectangles that we use when dividing them?

Tip:

Always ensure you have enough independent variables to solve for an area or any geometric problem!

Ask a new question for Free

By Image

Drop file here or Click Here to upload

Math Problem Analysis

Mathematical Concepts

Geometry
Rectangular Area
Algebra

Formulas

Area of a rectangle = length × width

Theorems

Rectangular Area Theorem

Suitable Grade Level

Grades 8-10