geometry
posted by Anonymous .
A swimming pool is 30 feet wide and 60 feet long. If it is surrounded by square tiles, each of which is 1 foot by 1 foot, how many tiles are there surrounding the pool?

You will need tiles along all the sides ...
2(30) + 2(60) = 180
But you will also need a tile on each of the corners, so 4 more
total = 184 
a physical therapy facility is building a new pool that is 60 feet long and 5 feet deep. they have ordered enough tile for a 220 foot long border around. how wide should the pool be to ensure that all tiles are used?