Math Problem Statement

Quadrilaterals A, B and C are similar. Work out the unknown length, t. Give your answer as an integer or as a fraction in its simplest form.

Solution

We are given that quadrilaterals AA, BB, and CC are similar. This means that their corresponding side lengths are proportional.

Step-by-step solution:

1. Identify the known dimensions:

  • Quadrilateral AA:
    • Height = 3 m
    • Length = 5 m
  • Quadrilateral BB:
    • Height = 32 m
    • Length = 20 m
  • Quadrilateral CC:
    • Height = 36 m
    • Length = tt (unknown).

2. Set up the proportion:

Since the quadrilaterals are similar, we can set up a proportion using the corresponding sides.

We use the ratio of heights to find the unknown length tt. The height of quadrilateral CC is 36 m, and the height of quadrilateral BB is 32 m.

t20=3632\frac{t}{20} = \frac{36}{32}

3. Solve for tt:

Simplify the fraction on the right-hand side:

3632=98\frac{36}{32} = \frac{9}{8}

Now, solve for tt by multiplying both sides of the equation by 20:

t=20×98t = 20 \times \frac{9}{8}

t=1808=22.5t = \frac{180}{8} = 22.5

Final answer:

The unknown length tt is 22.5 m.


Would you like more details or have any questions? Here are some related questions:

  1. How do you find the scale factor between two similar shapes?
  2. What are some properties of similar quadrilaterals?
  3. Can this method be applied to 3D shapes as well, and how?
  4. What other relationships exist between similar polygons besides their side lengths?
  5. How can proportions help solve real-world problems involving similar shapes?

Tip: When working with similar shapes, always identify corresponding sides and use proportions to find unknown values.

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Math Problem Analysis

Mathematical Concepts

Proportionality
Similarity of figures

Formulas

Proportion: t/20 = 36/32
t = 20 * (36/32)

Theorems

Theorem of similar figures

Suitable Grade Level

Grades 7-12