A rubber sheet is fastened to a circular hoop 84 cm in diameter. A stick is positioned in the center and pushed up stretching the rubber sheet into the shape of a cone. How far does the stick need to be pushed up before the area of the rubber sheet is doubled? Round to the nearest tenthformula for lateral area of a cone is perimeter of the base multiplied by slant height.perimetert of the base is diameter of the base multiplied by PiPS can you show your work or at least describe it?
What is the question that is just a statement with a question mark.. what do you want to KNOW?
This is way too broad. Simple: A dog, and a key. If the dog knows you and you have the key, you can access your home. (Actually, even a lock and a key are a basic access control system) Advanced: Iris reader for ID, or RFID card readers, alarm, computer monitoring, video cameras, security, etc.
