Kanika had a piece of cloth 1 m long and 60 cm broad. She cut it into square shaped handkerchiefs, each side measuring 20 cm and put a lace on the boundary. How much lace is needed for the handkerchiefs?
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Answer:
No of handkerchiefs= Total area of cloth/ Total area of handkerchief
100×60/20×20
= 15 [ 1m = 100cm]
Perimeter of 15 handkerchiefs = 15× (1×20)
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