# a hedge boundary needs to be planted around a rectangular lawn 18 m long and 12 m wide. if three shrubs can be planted to grow a metre hedge how many shrubs will be needed in all

Dear Student,

Given  : A hedge boundary needs to be planted around a rectangular lawn 18 m long and 12 m wide .

We know perimeter of rectangle  =  2 ( Length  + width )

So,

Perimeter of rectangular lawn  =  2 ( 18 + 12 ) =  2 $×$ 30   =  60 m

Also given :  If three shrubs can be planted to grow a metre hedge .

So,

Total number of shrubs will be needed  =  3 $×$ 60 =  180                                         ( Ans )

Hope this information will clear your doubts about Perimeter and Area .

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Regards

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