A toy in the form of cone of radius 3.5 cm mounted on a hemisphere of same radius. The total height of the toy is 15.5 cm, find the total surface area of toy. A toy in the form of cone of radius 3.5 cm mounted on a hemisphere of same radius. The total height of the toy is 15.5 cm find the total surface area of toy. October 6, 2020 Category: Chapter 13 - Surface Areas and Volumes , Maths , NCERT Class 10 , Facebook Messenger WhatsApp Share this:TwitterFacebook Related