What is the greatest common factor of 16 and 48?

16

Step-by-step explanation:

We can list out each of the numbers' prime factors first before deciding their greatest common factor.

16: 2 × 2 × 2 × 2

48: 2 × 2 × 2 × 2 × 3

As you can see the bolded parts, these are the common factors of the two numbers. To find the greatest common factors, we just have to multiply all their common factors together.  

Greatest common factor of 16 & 48: 2 × 2 × 2 × 2 = 16

24 units

Step-by-step explanation:

Remember, opposite sides of a rectangle are equal, so really you already have the measures of each side. Then, you add them together, so 8 + 8 + 4 + 4 = 24 inches. Thus, 24 inches is your final answer.