Alex G. answered • 02/16/21

Purdue Engineer, Math Tutor for High School and Middle School

Hi Scott,

Since it asks for cost to maintain the conservation area, we need to find its area. We do this using the scale factor.

Scale factor typically refers to scaling of the sides. Because ours is 1:150, that means that the length of both sides of the conservation area is 150 times the length of the sides of the display. So we do:

3 x 150 = 450

4 x 150 = 600

So the dimensions of the conservation area are 450 m x 600 m. Multiplying, we get a conservation area of 270,000 square meters. At $0.65 per square meter, the total cost would be $175,500.

Hope that helps.

Alex G.

02/16/21

Scott C.

That makes perfect sense. Thank you! The way you explained it has made it easier to answer my other questions as well. I was missing a step.02/16/21