Math Problem Statement

Find the area of the shape below. Give your answer in m².

Solution

To find the area of the given shape, we divide it into two parts:

  1. A rectangle on the left
  2. A triangle on the right

Step 1: Area of the Rectangle

The dimensions of the rectangle are:

  • Length = 15 m
  • Height = 6 m

The area of a rectangle is given by:
Area of rectangle=Length×Height\text{Area of rectangle} = \text{Length} \times \text{Height}
Area of rectangle=15×6=90m2\text{Area of rectangle} = 15 \times 6 = 90 \, \text{m}^2


Step 2: Area of the Triangle

The base of the triangle is:

  • Base = Total length - Length of rectangle = 2115=6m21 - 15 = 6 \, \text{m}
    The height of the triangle is the same as the rectangle:
  • Height = 6 m

The area of a triangle is given by:
Area of triangle=12×Base×Height\text{Area of triangle} = \frac{1}{2} \times \text{Base} \times \text{Height}
Area of triangle=12×6×6=18m2\text{Area of triangle} = \frac{1}{2} \times 6 \times 6 = 18 \, \text{m}^2


Step 3: Total Area of the Shape

Now, we add the areas of the rectangle and triangle:
Total Area=Area of rectangle+Area of triangle\text{Total Area} = \text{Area of rectangle} + \text{Area of triangle}
Total Area=90+18=108m2\text{Total Area} = 90 + 18 = 108 \, \text{m}^2


Final Answer:

The area of the shape is 108 m².

Let me know if you need further clarification!


Related Questions:

  1. How do you find the area of a trapezium?
  2. What is the area of a triangle if the base and height are doubled?
  3. How can you calculate the perimeter of this shape?
  4. What is the area of a rectangle when its length is tripled and width is doubled?
  5. How do you calculate the area of composite shapes with curved edges?

Tip: Always divide complex shapes into basic geometric shapes (like rectangles and triangles) to simplify area calculations.

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Math Problem Analysis

Mathematical Concepts

Area calculation
Composite shapes
Geometry

Formulas

Area of rectangle = Length × Height
Area of triangle = 1/2 × Base × Height
Total Area = Area of rectangle + Area of triangle

Theorems

Basic geometric area calculation

Suitable Grade Level

Grades 6-8