The scale 1 in.:120ft was used to create a 169.3-inch tall model of Alaska's Mount McKinley. Estimate the height of Mount McKinley from the height of the model.
169.3 in ( 120 ft/in) = 20,316 ft
I got the same answer. My teacher sais its wrong
Well, maybe she wants you to estimate in your head or on scrap paper rather than use a calculator
like
170* 100 = 17000
170*20 = 3400
sum = 20,400
To estimate the height of Mount McKinley from the height of the model, we need to use the given scale.
The scale provided is 1 inch represents 120 feet. This means that the ratio of the model's height to the actual height of Mount McKinley is 1:120.
Given that the model's height is 169.3 inches, we can set up a proportion to find the estimated height of Mount McKinley.
Let's set up the proportion:
Model's height (in inches) / Actual height of Mount McKinley (in feet) = Scale factor
169.3 inches / x feet = 1 inch / 120 feet
To solve for x (the actual height of Mount McKinley), we can cross-multiply and solve for x:
169.3 inches * 120 feet = x feet * 1 inch
(169.3 * 120) / 1 = x
x = 20,316 feet
Therefore, using the given scale, the estimated height of Mount McKinley would be approximately 20,316 feet.