Question

Joshua is creating a series of rectangles, one inside the other. The length of the first rectangle, Rectangle A, is five inches. Joshua dilates Rectangle A about its center by a scale factor of two to get Rectangle B. He repeats this process using the same scale factor till he gets a rectangle of length 80 inches.

How many dilations did Joshua perform including the dilation of Rectangle A?

4

2

8

16

Answer 1

Okay, so, here we say tha we have a rectangle, and we keep expanding it by a proportion of two.
So start with 5.
1)5x2=10
2)10x2=20
3)20x2=40
4)40x2= 80

And that's the answer, 4 times.

Answer 2

thank u