Question

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?

Answer 1

Answer:

$35

Step-by-step explanation:

1 inch = 2.5 feet

Then

$a=2.75\ in = 2.75\cdot 2.5\ ft=6.875\ ft\\ \\b=1.25\ in=1.25\cdot 2.5\ ft=3.125\ ft$

The perimeter of the backyard is

$P=6.875+3.125=10\ ft$

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

$\ 3.5\cdot 10=\ 35$