Math Problem Statement

What is the total area of the figure shown? Convert the answer to cm².

Solution

Let's break down the given image and calculate the total area of the figure:

Observations:

  1. The figure is composed of two parts:
    • A rectangle with dimensions 12 meters (length) and 9 meters (height).
    • A triangle at the right end of the rectangle with a base of 14 meters (total length) minus the rectangle's length of 12 meters, leaving a base of 2 meters. The height of the triangle is given as 9 meters.

Step-by-Step Calculation:

  1. Area of the Rectangle: Arearectangle=Length×Height=12m×9m=108m2\text{Area}_{\text{rectangle}} = \text{Length} \times \text{Height} = 12 \, \text{m} \times 9 \, \text{m} = 108 \, \text{m}^2

  2. Area of the Triangle: Areatriangle=12×Base×Height=12×2m×9m=9m2\text{Area}_{\text{triangle}} = \frac{1}{2} \times \text{Base} \times \text{Height} = \frac{1}{2} \times 2 \, \text{m} \times 9 \, \text{m} = 9 \, \text{m}^2

  3. Total Area: Total Area=108m2+9m2=117m2\text{Total Area} = 108 \, \text{m}^2 + 9 \, \text{m}^2 = 117 \, \text{m}^2

Conversion to square centimeters:

Since 1 meter = 100 centimeters, we convert from square meters to square centimeters by multiplying by 10410^4: Total Area in cm2=117m2×104=1,170,000cm2\text{Total Area in cm}^2 = 117 \, \text{m}^2 \times 10^4 = 1,170,000 \, \text{cm}^2

Final Answer:

The total area of the figure is 1,170,000 cm².

Let me know if you need any further clarifications!


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

  1. What is the area of a triangle with a base of 5 meters and height of 8 meters in cm²?
  2. How do you convert a square meter measurement to square millimeters?
  3. What is the formula for the area of a trapezoid?
  4. If the height of the rectangle was doubled, what would be the new total area in m²?
  5. How do you calculate the perimeter of this arrow-shaped figure?

Tip: Always check if the units are consistent before solving any geometry problem.

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Math Problem Analysis

Mathematical Concepts

Geometry
Area Calculation
Unit Conversion

Formulas

Area of a rectangle: Length × Height
Area of a triangle: 1/2 × Base × Height
Unit conversion from m² to cm²: Multiply by 10,000

Theorems

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Suitable Grade Level

Grades 6-8