Brandy has a rectangular wooden deck that measures 7 feet by 12 feet. She builds an addition to the deck that is 4 feet longer. What is the perimeter of her deck now?
To find the perimeter of the deck, we need to add up the lengths of all four sides of the rectangular deck.
The dimensions of Brandy's rectangular wooden deck are 7 feet by 12 feet. So, the perimeter of the deck before the addition is:
Perimeter = 2 * (Length + Width)
= 2 * (7 + 12)
= 2 * 19
= 38 feet
Now, Brandy builds an addition that is 4 feet longer. This means the new width would be (12 + 4) = 16 feet.
The new dimensions of the deck are 7 feet by 16 feet. So, the perimeter of the deck now is:
Perimeter = 2 * (Length + Width)
= 2 * (7 + 16)
= 2 * 23
= 46 feet
Therefore, the perimeter of Brandy's deck after adding the addition is 46 feet.
The new length of the deck is 12+4=<<12+4=16>>16 feet.
The dimensions of the deck are now 7 feet by 16 feet.
The perimeter of the deck is 2*7+2*16=14+32=<<2*7+2*16=60>>60 feet. Answer: \boxed{60}.