Question

The CSA of a cylindrical container of depth 20 m and radius 0.7 m =.

• A. 22 m${}^2$
• B. 44 m${}^2$
• C. 88 m${}^2$

Answer 1

The correct option is C 88 m${}^2$

Curved surface area (CSA) of the cylindrical vessel
= 2$\pi rh$
$\Rightarrow$ CSA = $2\pi$ $\times$$\left(\frac{7}{10}\right)$ $\times$ 20
$\Rightarrow$ CSA = $2\times \frac{22}{7}$​ $\times$​ $\frac{7}{10}$ $\times$​ 20
$\Rightarrow$ CSA = 88 $m^2$