A toy is made by fixing a solid hemisphere of radius on top of a solid right circular…

MATHEMATICS · Single correct · CBSE · Mathematics · Surface Areas and Volumes · Surface Areas and Volumes

Problem

A toy is made by fixing a solid hemisphere of radius

3\,\text{cm}

on top of a solid right circular cylinder of the same radius and height

7\,\text{cm}

. Find the total surface area of the toy. (Give your answer in terms of

\pi

.) (a)

78\pi\,\text{cm}^2

(b)

69\pi\,\text{cm}^2

(c)

60\pi\,\text{cm}^2

(d)

51\pi\,\text{cm}^2