Question

What is the scale factor t?

A. 9/25

B. 25/9

C. 5/3

D. 3/5

Answer 1

C

Explanation:

The scale factor of rectangle HIJK to rectangle LMNO is:

"What" multiplied by the area of rectangle HIJK will give us the area of rectangle LMNO?

This "What" is the scale factor. (For area, we will put k^2 in place of "what" and solve for k to get the scale factor. Let's do this:

`135*k^2=375\\k^2=(375)/(135)\\k^2=(25)/(9)\\k=\sqrt{(25)/(9)}\\ k=(√(25) )/(√(9) )\\k=(5)/(3)`

Correct answer is C.