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McGraw Hill Integrated II, 2012

MH

McGraw Hill Integrated II, 2012 View details

7. Scale Drawings and Models

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Exercise 18 Page 604

Create a proportion using the scale factor.

150.75 feet

Practice makes perfect

We are given that a replica of the Statue of Liberty in Austin, Texas, is 16 34 feet tall and the scale factor of this replica to the actual statue is 1:9. To find the height of the actual statue, h, we will create a proportion using the given information. 16 34/h= 1/9 Let's solve the above proportion using cross multiplication. We can start with rewriting 16 34 as a decimal.

16 34/h=1/9

Write as a decimal

16.75/h=1/9

Cross multiply

16.75*9=h*1

Multiply

150.75=h

Rearrange equation

h=150.75

The height of the actual statue is 150.75 feet.

Subchapter links

Exercises p.602-605