Recap: Perimeter and Area

Part of the Expressions & Data section of Coddy's Pre-Algebra journey. Lesson 47 of 52.

Challenge

A rectangular garden is 15 metres long and 8 metres wide. One corner is paved with a triangle that has a base of 4 metres and a height of 6 metres. The rest is grass. Find the grass area g, in square metres.

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All lessons in Expressions & Data

1Variables and Expressions

What a Variable Is Writing Expressions Expressions from Stories Two Operations Recap: Expressions

4Combining Like Terms

Like Terms Letters and Numbers Negative Terms Two Letters Distribute, Then Collect Recap: Like Terms

7Probability

Chance as a Fraction The Complement Chance as a Percent Expected Count Recap: Probability

10Final Challenges

Final: Two Brackets Final: A Cubic Expression Final: The Phone Plan Final: A Decimal Mean Final: The Last Spin

2Evaluating Expressions

Substituting a Value Negative Inputs Powers in Expressions Formulas Recap: Evaluating

5Patterns and Sequences

Continuing a Pattern The Common Difference The nth Term Writing the Rule Recap: Sequences

8Tables and Charts

Reading a Table Totals and Differences Reading a Line Graph Percent of a Total Recap: Tables and Charts

3The Distributive Property

Number Properties Mental Math Distributing Letters Distributing a Minus Recap: Distributing

6Data and Averages

The Mean Mean with Negatives The Median The Mode The Range Recap: Data and Averages

9Perimeter and Area

Perimeter Area of a Rectangle Area of a Triangle Perimeter as an ExpressionRecap: Perimeter and Area