Cage

How many m² of mesh farmer use for fencing of a cuboid cage with dimensions 25m, 18m, and 2.5m?

Correct answer:

S =  665 m²

Step-by-step explanation:

$$\begin{gathered} a=25\text{ m } \\ b=18\text{ m } \\ c=2.5\text{ m } \\ S=a\cdot b+2\cdot (a+b)\cdot c=25\cdot 18+2\cdot (25+18)\cdot 2.5=665{\text{m}}^2 \end{gathered}$$

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