Mathematics

Problem

Calculate the area of sheet metal needed to make an open cylindrical container of radius

7\,\text{cm}

and height

12\,\text{cm}

. Take

\pi = \dfrac{22}{7}

. a)

836\,\text{cm}^2

154\,\text{cm}^2

682\,\text{cm}^2

528\,\text{cm}^2