Question

A scale drawing of rectangle is made by using a scale factor of 5/8. The original in the scale drawing are shown below.

Which method can be used to find the dimensions of the original rectangle?

Answer 1

Answer is D.

Explanation:

Just took test!

Answer 2

Answer: Multiply the lenght and the width of the scale drawing of rectangle by
`(8)/(5)`

Explanation:

Knowing that the scale factor used is:

`scale\ factor=(5)/(8)`

You know that the dimensions of the scale drawing was obtained by multiplying the dimensions of the original rectangle by
`(5)/(8)`.

Therefore, the dimensions of the original rectangle can be found with this method:

Multiply the lenght and the width of the scale drawing of rectangle by
`(8)/(5)`

Then, you get:

`lenght_((original))=((8)/(5))(18\ inches)\\\\lenght_((original))=28.8\ inches\\\\\\width_((original))=((8)/(5))(12\ inches)\\\\width_((original))=19.2\ inches`