Question

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 in2

250 in2

100 in2

81.9 in

Answer 1

What's the original area of the picture?

Answer 2

since it's a 1:2.5 factor, we multiply each side by 2.5 first.

Answer 3

8in * 2.5 = 20 in

5in * 2.5 = 12.5 in

Answer 4

its not c is my only hint

Answer 5

Now we multiply the sides to get the area.

20in * 12.5in = 250 in^2

Can someone double check my work. Thank you

Answer 6

your right

Answer 7

so its B???