Question

what number can you multiply each length in the scale drawing by to find the actual length?
what are the actual length and width of the trampoline?
actual length = 16 ft
actual width = 10 ft
what is the actual area of the trampoline?
40 ft²
80 ft²
160 ft²
240 ft²

Explanation:

Step1: Determine the scale factor

The scale is \(1\) in. \(= 2\) ft. So the scale number is \(2\).

Step2: Calculate actual length and width

Given drawing length \(l = 8\) in. Actual length \(=8\times2=16\) ft.
Given drawing width \(w = 5\) in. Actual width \(=5\times2 = 10\) ft.

Step3: Calculate the area

The area of a rectangle is \(A=\text{length}\times\text{width}\). So \(A=16\times10 = 160\) \(ft^{2}\).

Answer:

1. The number to multiply by is \(2\).
2. Actual length \(16\) ft, actual width \(10\) ft.
3. Actual area \(160\) \(ft^{2}\).