Mathematics

Problem

A wooden toy consists of a right circular cylinder of radius

3\,

cm and height

5\,

cm, with a hemisphere of the same radius fixed at its top and a right circular cone of the same radius and height

4\,

cm attached at its bottom. Find the total outer surface area of the toy (use

\pi = 3.14

). a)

151\,\text{cm}^2

226\,\text{cm}^2

198\,\text{cm}^2

188\,\text{cm}^2