The lid rectangular box of sides is 40 cm by 10 cm sealed all round with a tape what is light of tape
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Thus means that the boundary of the lid is sealed.And boundary of closed figure is its perimeter.
So,perimeter of rect.lid = 2(l+b)
=2(40+10)
=2(50)
100 cm.
Therefore the lenght of the tape = 100 cm.
So,perimeter of rect.lid = 2(l+b)
=2(40+10)
=2(50)
100 cm.
Therefore the lenght of the tape = 100 cm.
Ashu31:
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