max280 max280
  • 14-01-2019
  • Mathematics
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wegnerkolmp2741o
wegnerkolmp2741o wegnerkolmp2741o
  • 14-01-2019

Answer:

12 3/8 ft

Step-by-step explanation:

The scale is 1 cm = 2 3/4 ft


The kitchen in the drawing is 4 1/2 cm

We can use proportions to solve.  Put the drawing size over the real life size

1 cm            4 1/2 cm

---------- = -------------

2 3/4 ft            x ft

Using cross products

1 *x = 2 3/4* 4 1/2

Changing from mixed numbers to improper fractions

x = (4*2+3)/4 * (2*4+1)/2

x = 11/4 * 9/2

  = 99/8

8 goes into 99 12 times  (12*8=96)  with 3 left over

x = 12 3/8

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