Question

Question 3(Multiple Choice Worth 5 points)(05.01)A picture is 5 inches wide and 8 inches tall: A photographer wants to use a scale factor of 2.5 to enlarge a picture. What will the area of the picture be after it is enlarged?40 in2250 in2100 in281.9 in2

Answer 1

Find the new dimentions of the enlarged picture multiplying the length of each side by the scale factor of 2.5:

`\begin{gathered} 5in*2.5=12.5in \\ 8in*2.5=20in \end{gathered}`

Now, multiply width times height to find the area of the picture (assuming that it has a rectangular shape):

`12.5in*20in=250in^2`

Therefore, the area of the enlarged picture will be 250 squared inches.