SOLUTION: A 20-ft by 40-ft pool is surrounded by a deck d feet wide. What is the combined area of the deck and the pool?

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: A 20-ft by 40-ft pool is surrounded by a deck d feet wide. What is the combined area of the deck and the pool?      Log On


   

Question 325054: A 20-ft by 40-ft pool is surrounded by a deck d feet wide. What is the combined area of the deck and the pool?
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
(20+2D)(40+2D)
800+80D+40D+4D^2
4D^2+120D+800
4(D^2+30D+200) ANS.