How area changes when a figure is scaled
Area changes by the square of the scale factor.
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A rectangle has an area of 17 cm². Each side is multiplied by 3. What is the new area in cm²?
Answer: 153
A rectangle has an area of 24 cm². Each side is multiplied by 2. What is the new area in cm²?
Answer: 96
A rectangle has an area of 11 cm². Each side is multiplied by 5. What is the new area in cm²?
Answer: 275
Tip: Area changes by the square of the scale factor.
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