A scale drawing of a billboard uses the scale 4cm : 9ft. The length of the billboard in the drawing is 11cm. How long is the actual billboard?

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Answer 1 · 2018-06-11T00:36:40

#24.75# ft.

We essentially have the following ratio:

#4/9:11/x#

where #x# is the length of the actual billboard.

We can solve this by cross-multiplying. We get

#4x=99#

Dividing by #4#, we get

#x=99/4#, or #24.75# ft.

Hope this helps!