Diameter 27713

The column for posters in the cylinder shape is 2.3 m high, and its diameter is 1.2 m. What is the area on which the posters can be glued?

Correct answer:

S =  8.67 m²

Step-by-step explanation:

$$\begin{gathered} D=1.2\text{m} \\ h=2.3\text{m} \\ r=D/2=1.2/2=\frac{3}{5}=0.6\text{m} \\ o=2\pi \cdot r=2\cdot 3.1416\cdot 0.6\doteq 3.7699\text{m} \\ S=o\cdot h=3.7699\cdot 2.3=8.67{\text{m}}^2 \end{gathered}$$

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