Curved surface area CSA

A cylinder 5cm high has a base radius(7/2) cm. Calculate the curved surface area.

Correct answer:

S =  109.9557 cm

Step-by-step explanation:

$$\begin{gathered} h=5\text{ cm } \\ r=7\mathrm{/}2={\displaystyle \frac{7}{2}}=3.5\text{ cm } \\ S=2\pi \cdot r\cdot h=2\cdot 3.1416\cdot 3.5\cdot 5=109.9557\text{ cm} \end{gathered}$$

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Math student

Thank u for your help

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