Respuesta :

You just need to multiply the size by 45. 
9 inches x 45 = 405 inches.

Or if you need it in feet and inches: 
405 / 12 = 33 remainder 9, 
The answer would be 33 feet, 9 inches, or 405 inches.

Hope this helps.

Answer:

The length of the actual wall is 405 inches or 33.75 feet.

Step-by-step explanation:

A blueprint for a house has a scale factor n = 45.

We can say a in a blueprint scale factor 1 in. = 45 inches.

A wall in the blueprints is 9 in.

So the length of the actual wall = 45 × 9 =  405 inches.

We usually represent the length of a wall in feet, so we convert 405 inches into feet.

12 inches = 1 feet

405 inches = 405 / 12 = 33.75 feet.

The length of the actual wall is 405 inches or 33.75 feet.

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