a rectangular piece of paper 30cm by 21 cm is folded that opposite corners coincide. how long is the crease?
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Crease will be the diagonal of rectangle
doagonal = √ (30^2 + 21^2 ) = √(900+441)
= √1341 = 36.61 cm ans
Hope it will help
doagonal = √ (30^2 + 21^2 ) = √(900+441)
= √1341 = 36.61 cm ans
Hope it will help
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