Math Drills
Side Lengths and Perimeter
3Calculation
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What this worksheet covers
- Topic
- Area
- Worksheet
- Side Lengths and Perimeter
The formula for area is traced backwards. Finding a Side from the Area works out the height from the area written on the drawing and the width, while Perimeter works out the way round from the height and the width. Both come as calculations with a drawing and an expression box.
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In Perimeter, answers appear where the writing stops once two sides have been added and the step of doubling that sum is missing. For Finding a Side from the Area, multiplying the side found by the other side on the drawing and landing back on the drawing's area shows the work is right. For the perimeter, adding the four sides one by one is worth doing again.
Lessons that deal with a single rectangle end here. From Area of Composite Figures a shape is cut into several rectangles and the formula used over and over. The footing is the single expression, height times width, memorized in Area of Rectangles and Squares.
- Finding a Side from the Area2 questions
- Perimeter2 questions
Questions & answers
What to do next
More worksheets in this unit
Area of Rectangles and SquaresArea of Rectangles and Squares Word Problems
Area of Composite FiguresArea of Composite Figures Finding the Area (L-Shape)
Area of Composite FiguresArea of Composite Figures Finding the Area (Various Shapes)
Units of Area (cm², m², a)Units of Area (cm², m², a) Conversion
Units of Area (ha, km²)Units of Area (ha, km²) Conversion
Finding Area and Converting UnitsFinding Area and Converting Units Conversion
