Question

Fabian used a ratio table to show the original dimensions of a rectangle and the dimensions when the rectangle is changed by a scale factor. He forgot to enter the length of the new rectangle.

Scale factor
1
2.5
Width
6
15
Length
9


Which length is missing from Fabian’s table?
3.6
11.5
21.6
22.5

Answer 1

Explanation:

11.5

Answer 2

Option D.

Explanation:

The given table is

Scale factor Width Length

1 6 9

2.5 15 -

We need to find the length of new rectangle.

Let x be the length of new rectangle.

`(x)/(9)=(2.5)/(1)`

On cross multiplication we get

`x* 1=2.5* 9`

`x=22.5`

The length of new rectangle is 22.5 units.

Therefore, the correct option is D.