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The scale of the map of the cafeterua was drawn by;
[tex]2\operatorname{cm}\cong3m[/tex]If the drawing was 40cm long, then;
[tex]\begin{gathered} \text{The length of the cafeteria is;} \\ =\frac{40\operatorname{cm}\times3m}{2\operatorname{cm}} \\ =60m \end{gathered}[/tex]Thus, the cafeteria is 60m long.