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CodeSignal

Area of 2D Shapes

via CodeSignal

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Overview

You’ll learn how to calculate the area of squares, rectangles, triangles, circles, and composite shapes by breaking larger surfaces into simpler pieces. By the end, you’ll be able to determine how much tile, paint, or fabric a familiar surface requires.

Syllabus

  • Unit 1: Calculate Area of Squares and Rectangles
    • Build Rectangles And Squares
    • Complete The Area Steps
    • Find Area From Side Lengths
    • Compare Rectangle Areas
    • Tile A Bathroom Floor
  • Unit 2: Calculate Area of Triangles
    • Identify The Correct Height
    • See Why Triangles Use Half
    • Explore How Base and Height Change Area
    • Fill in the Triangle Area Formula
    • Apply the Triangle Area Formula
    • Measure a Triangular Surface
  • Unit 3: Calculate Area of Circles
    • Target Circle Area
    • Match Circle Measurements and Terms
    • Finish the Circle Area Work
    • Solve for Circle Area
    • From Diameter to Area
    • Write Out the Pizza Area Reasoning
  • Unit 4: Solve Area Problems in Everyday Situations
    • Choose The Correct Area Formula
    • Name the Shape for Each Situation
    • Catch the Area Mistakes
    • Solve a Surface-Coverage Problem
    • Help a Friend Decide Between Area or Perimeter

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