# Reservoir

6 m long reservoir has a diameter of 2.2 m. What is its surface area in square meters?

Result

S =  49.072 m2

#### Solution:

$D=2.2 \ \text{m} \ \\ h=6 \ \text{m} \ \\ r=D/2=2.2/2=\dfrac{ 11 }{ 10 }=1.1 \ \text{m} \ \\ S_{1}=\pi \cdot \ r^2=3.1416 \cdot \ 1.1^2 \doteq 3.8013 \ \text{m}^2 \ \\ S=2 \cdot \ S_{1} + 2 \pi \cdot \ r \cdot \ h=2 \cdot \ 3.8013 + 2 \cdot \ 3.1416 \cdot \ 1.1 \cdot \ 6 \doteq 49.0717 \doteq 49.072 \ \text{m}^2$

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