NumericalEasy1 mark
9(c)
A model of a ship is made to a scale 1 : 300
The area of the deck ship is 180,000 m². Calculate the area of the deck of the model.
Topic: Similarity / scale / maps and models
Previous-year question practice database
Answer
Exam answer
Area scale model : actual = 1² : 300² = 1 : 90,000.
Actual deck area = 180,000 m².
Model deck area = 180,000/90,000 = 2 m².
Answer: 2 m².
Explanation
Areas of similar figures vary as the square of the linear scale factor.
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