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Max used a scale factor of 1 inch = 2.5 feet to draw a model of his backyard. If side a is 2.75 inches and side b is 1.25 inches and the cost is 3.5 per foot, how much will it cost him to build?

Respuesta :

frika

Answer:

$35

Step-by-step explanation:

1 inch = 2.5 feet

Then

[tex]a=2.75\ in = 2.75\cdot 2.5\ ft=6.875\ ft\\ \\b=1.25\ in=1.25\cdot 2.5\ ft=3.125\ ft[/tex]

The perimeter of the backyard is

[tex]P=6.875+3.125=10\ ft[/tex]

The cost is $3.5 per foot, then the total cost is

[tex]\$3.5\cdot 10=\$35[/tex]