Question

Девочке подарили кружево длиной 84 см. Она решила обшить кружевом платочек квадратной формы. какого размера платочек она может обшить этим кружевом, если на каждый уголок нужно добавить по 1 см?

Answer 1

Платок размером 20на 20 см
решение 
84-4=80 см на обшивку без углов
80/4=20 см. сторона платка..

Answer 2

The question is about finding the size of a square handkerchief that can be edged with a lace of length 84 cm, given that 1 cm is added to each corner. This is a problem of geometry and arithmetic. Here is a detailed answer:

- Let x be the side length of the square handkerchief in centimeters. - The perimeter of the square handkerchief is 4x, since it has four equal sides. - The length of the lace is 84 cm, and it is used to edge the entire handkerchief, plus 4 cm for the corners. - Therefore, we have the equation: 4x + 4 = 84, which means that the lace is equal to the perimeter of the handkerchief plus 4 cm. - To solve for x, we can subtract 4 from both sides of the equation and then divide by 4: x = (84 - 4) / 4 = 80 / 4 = 20. - The answer is x = 20, which means that the side length of the square handkerchief is 20 cm. - To check the answer, we can plug in x = 20 into the equation and see if it is true: 4 * 20 + 4 = 84, which is correct.

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