A photograph measuring 5.5 cm by 9 cm is enlarged in the ratio of 7:5. What is the new length and width of the picture?
Answer: 7.7 cm by 12.6 cm
Explanation
Let's calculate the new length and width of the picture:
Original length (L) = 9 cm
Original width (W) = 5.5 cm
Enlargement ratio = 7:5
New length (L') = (7/5) × L = (7/5) × 9 = 12.6 cm
New width (W') = (7/5) × W = (7/5) × 5.5 = 7.7 cm
So, the new length and width of the picture are:
7.7 cm by 12.6 cm
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