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22-10-2017
Mathematics

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A spider walks about 19 cm each second. About how long would it take the spider to walk around the perimeter of a room that is 3 m wide and 4 m long?

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22-10-2017

perimeter of rectangles: 2(L+w)=2(3m+4m)=14m=14*100=1400cm
spider can walk 19cm each second.it can walk perimeter of room in 1400/19=73.6 seconds

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