Boyd’s dartboard is octagonal. Each side measures 9 in. He drew a copy of the board that was smaller by a scale factor 0.25.

What is the side length of the dartboard Boyd drew?

___ in.

Question

Boyd’s dartboard is octagonal. Each side measures 9 in. He drew a copy of the board that was smaller by a scale factor 0.25.
 
What is the side length of the dartboard Boyd drew?
 
___  in.

mathmate · Answer

New length = old length $\times$ scale factor.
Since the copy (new) is geometrically similar to the original (old), the above formula/equation applies to any linear length.

anonymous · Answer

@mathmate  so what would the answer come out as?

mathstudent55 · Answer

The old length was 9 in.
The scale factor is 0.25
Use this info plus what @mathmate gave you to figure it out.