Areas after a dilation
Areas change by the square of the scale factor.
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A triangle with an area of 26 cm² is dilated by a scale factor of 2. What is the area of the image, in cm²?
Answer: 104
A triangle with an area of 8 cm² is dilated by a scale factor of 3. What is the area of the image, in cm²?
Answer: 72
A triangle with an area of 38 cm² is dilated by a scale factor of 2. What is the area of the image, in cm²?
Answer: 152
Tip: Areas change by the square of the scale factor.
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