1) Let’s introduce a variable.
Let x be the width of the rectangle, then 2x is the length of the rectangle.
2) Let’s compose an equation and solve it.
The perimeter of a rectangle is equal to the sum of the lengths of its four sides. P = a + b + a + b = 2 (a + b), where a is the length of the rectangle, b is the width of the rectangle.
2 (2x + x) = 0.36;
2 * 3x = 0.36;
6x = 0.36;
x = 0.36: 6;
x = 0.06 – the width of the rectangle;
2x = 0.06 * 2 = 0.12 – the length of the rectangle.
3) Find the area of the rectangle.
The area of a rectangle is equal to the product of its sides, length and width. S = ab.
S = 0.12 * 0.06 = 0.0072.
One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.