Geometry and TrigonometryEasyArea of an enlarged photograph
Geometry and Trigonometry practice question
A rectangular photograph measures 4 inches by 6 inches. It is enlarged so that each side is doubled. What is the area of the enlarged photograph, in square inches?
Answer: 96
The enlargement is 8 by 12 inches: 8 × 12 = 96. (Doubling both sides multiplies the area by 4: 24 × 4 = 96.)
Common wrong answers
- If you answered 24
- 24 is the original area.
- If you answered 40
- 40 is the perimeter of the enlargement (2 × (8 + 12)), not its area.
- If you answered 48
- 48 doubles the original area (24 × 2), but doubling BOTH sides multiplies the area by 4.
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