Calculating Area: Squares and Triangles

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Questions and Answers

What is the formula to calculate the area of a rectangle?

  • Area = Length + Width
  • Area = 1/2 * Length * Width
  • Area = Length * Width (correct)
  • Area = Length / Width

The height of a triangle is always inside the triangle.

False (B)

What unit is used to measure area?

square units

The area of a triangle is calculated by multiplying half of its ______ by its height.

<p>base</p> Signup and view all the answers

Match the following shapes with their area calculation formulas:

<p>Rectangle = Area = Length * Width Triangle = Area = 1/2 * Base * Height</p> Signup and view all the answers

Flashcards

Area

The measure of the 2-dimensional space a shape covers, in square units.

Calculating Area of Rectangle

Area = Length x Width; used for squares and rectangles.

Units of Area

Common measurements include cm², m², mi², in².

Area of a Triangle

Area = 1/2 * Base x Height; applies to all types of triangles.

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Base and Height of Triangle

The base is any side; height is perpendicular distance from vertex to base.

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Study Notes

Area

  • Area is the measure of the 2-dimensional space a shape covers.
  • It is measured in square units.

Calculating Area

  • The area of a square or rectangle is calculated by multiplying its length and width.
    • Formula: Area = Length x Width (A = L x W)

Units of Area

  • Square centimeter (cm²)
  • Square meter (m²)
  • Square mile (mi²)
  • Square inch (in²)

Area of a Triangle

  • The area of a triangle is calculated by multiplying half of its base by its height.
    • Formula: Area = 1/2 * Base x Height
  • The base of a triangle is any side of the triangle.
  • The height of a triangle is the perpendicular distance from the vertex opposite the base to the base itself.
  • The height can be inside, outside, or on the edge of the triangle.
  • The formula applies to all types of triangles, including right, acute, and obtuse.

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