Question

Find 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 $m^2$
• D. 11 $m^2$

Answer 1

The correct option is C

88 $m^2$

We know that,
Curved surface area (CSA) of the cylindrical vessel = 2$\pi rh$.

Now,
$\Rightarrow$ CSA = $\pi$ $\times$​ 2 $\times$$\left(\frac{7}{10}\right)$ $\times$ 20
$\Rightarrow$ CSA = $\frac{22}{7}$ $\times$​ 2 $\times$​ $\frac{7}{10}$ $\times$​ 20
$\Rightarrow$ CSA = 88 $m^2$