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Connect arrays with area, find missing sides and compare rectangular designs.
Free examples and worked answers. No account needed.
Practise the method.
Connect arrays with area, find missing sides and compare rectangular designs.
Connect arrays with area, find missing sides and compare rectangular designs.
Example 1
A rectangle has area 16 square metres and width 4m. What is its length in metres?
Show worked answer
Answer: 4
- Area = length × width.
- Divide the area by the width: 416=4m.
Example 2
A rectangle has area 60 square metres and width 5m. What is its length in metres?
Show worked answer
Answer: 12
- Area = length × width.
- Divide the area by the width: 560=12m.
Example 3
A rectangular garden is 10m long and 8m wide. What is its area in square metres?
Rectangular gardenDiagram not to scaleShow worked answer
Answer: 80
- Each row contains 10 one-square-metre units, with 8 rows.
- Area = length × width =10×8=80 square metres.
Put it into practice.
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