Answer:
1.44
Explanation:
Let the shape of the photo be square shaped. All the sides of a square are equal.
If the photo is 10 cm long initially, the area of the photo before enlargement will be expressed as
A1 = Length * Length
A1 = 10 * 10
A1 = 100 cm²
If the photo is enlarged so that all dimensions are increased by 20%, then increment in length = 20% of 10 cm
= 20/100 * 10
= 0.2 * 10
= 2 cm
Length of the photo after enlargement = 10 cm + 2 cm = 12 cm
Area of the enlarged photo A2 = 12 * 12 = 144 cm²
The ratio of the area of the enlarged photo to the area of the original photo = A2/A1 = 144/100
= 72/50
= 36/25
= 1.44