Concrete pipe

How much will cost cover a 6 m long concrete pipe with an outer radius 1.5 m and inner radius 0.8 meters if 1 m² paint costs 24 €.

Correct answer:

x =  2323.77 Eur

Step-by-step explanation:

$x=24\cdot 2\pi \cdot (6\cdot (1.5+0.8)+1.5^2-0.8^2)=2323.77\text{ Eur}=2.3\cdot 10^3\text{ Eur}$

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