Question

a square lobby is 18 m long. if a square carpet of 13 m long is to cover it what is the area or the lobby that is left uncovered.

Answer 1

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ıllıllıllıllıllıllı[ Your Answer ]ıllıllıllıllıllıllı

Area of square lobby = 18×18
Area of square carpet = 13×13
Area of uncovered lobby = area of lobby - area of cover.

=> 324-169
=> 155 m^2

Answer 2

$area \: of \: the \: lobby = {18}^{2} \\ \\ = 324 m^2 \\ \\ area \: of \: the \: carpet = {13}^{2} \\ \\ = 169 m^2 \\ \\ \: left \: area\: of \: lobby \: = 324 - 169 \\ \\ = 155 m ^ 2$
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