Beth need enough ribbon to go around the perimeter of her blanket. If the blanket measures 45 inches by 60 inches, how many inches of ribbon will beth need to buy?
P = 2L + 2W
P = (2 * 60) + (2 * 45)
P = 120 + 90
P = ?____ inches
210 inches
To find the perimeter of the blanket, you need to add up the lengths of all four sides.
The blanket measures 45 inches by 60 inches.
So, the length of one side is 45 inches and the length of the adjacent side is 60 inches.
Since there are two sides of each length, you need to multiply each length by 2 to account for all four sides.
In this case, you would multiply 45 inches by 2 to get 90 inches, and 60 inches by 2 to get 120 inches.
Now, you can add these two lengths together to find the total perimeter.
90 inches + 120 inches = 210 inches
Therefore, Beth will need to buy 210 inches of ribbon.