A fez, the cap used by the Turks, is shaped like the frustum of a cone . If its radius on the open side is 10 cm, radius at the upper base is 4 cm and its slant height is 15 cm, find the area of material used for making it. A fez find the area of material used for making it. is shaped like the frustum of a cone . If its radius on the open side is 10 cm radius at the upper base is 4 cm and its slant height is 15 cm the cap used by the Turks October 6, 2020 Category: Chapter 13 - Surface Areas and Volumes , Maths , NCERT Class 10 , Facebook Messenger WhatsApp Share this:TwitterFacebook Related