The children's room at a local library has a square-shaped floor with an area of 400 feet. how can you find the length and width of the room without knowing wither measurement?

Sherrie is baking a pie for her family. she leaves the room and comes back to 35% of the pie having been eaten before she can put the topping on. how much 1 square inch strips of dough will she need for the top, now that a portion is missing? round your answer to the nearest while nimber.