Scale Drawing

                       Lesson 1

                                                                                                                       

                                                             Problem:                   The length of the tunnel is 200 miles.  If 1 inch represents 50 miles, what is the length of the tunnel?

                                                             Solution                    Divide 200 by 50 to determine the number of units

                           Step 1:                      

                                      = 200/50 = 4 units

 

                                                                                 Solution                          Take the units and multiply by the scale

Step 2:                                                                             

                                                                                 

                                                                                 Solution                          = 4(1) = 4 inches

 Step 3:    

 

 Solution                     The answer is:  4 inches

 Step 4:                                                                      

 Complete                                                                   

                                                                                                                               

                                                             Try two practice problems:  

 

                                                                                               Do the following:                                                                                          

A.

The length of the road is 400 miles.  If 0.5 inch represents 20 miles, what is the length of the road?

 

B.

Dimensions of a box are 300 feet by 150 feet. If 1 inch represents 30 feet, what are the dimensions of the box on the drawing?

 

 

                                                                                               

        

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