Mathematics for IGCSE & O level - Transformations (Section 5 - No. 9)
If the scale factor for an enlargement is 3, what will happen to the area of the image compared to the original?
The area will be multiplied by 3.
The area will be multiplied by 6.
The area will be multiplied by 9.
The area will remain the same.
Giải thích
Area is scaled by the square of the scale factor (3^2 = 9).