The slope of a roof is called the pitch and is defined as follows:
pitch = rise of roof
½ span of roof
find the pitch of a roof if the rise is 12 feet and the span is 30 feet.
find the pitch of a roof if the rise is 4 feet and the span is 24 feet.

Mrs. avila is buying a wallpaper border to go on all of her kitchen walls. she wants to buy 5 extra feet of wallpaper border than she needs to be sure she has enough. she buys 55.5 feet of the border. the store owner selling the border uses the width of mrs. avila's kitchen to determine that the length of her kitchen must be 14.5 feet.