Question

Найдите стороны прямоугольника МNKL,если его длина в 3 раза больше ширины, а периметр равен 80см​

Answer 1

Ответ:

Может так,не думаю что правильно

Answer 2

Finding the sides of a rectangle

To find the sides of a rectangle, we need to use the given information about the length and width of the rectangle, as well as its perimeter.

Let's denote the width of the rectangle as w and the length as l.

According to the problem statement, the length of the rectangle is 3 times greater than its width. Mathematically, we can express this as:

l = 3w (Equation 1)

The perimeter of a rectangle is given by the formula:

perimeter = 2(l + w) (Equation 2)

We are also given that the perimeter of the rectangle is 80 cm. Substituting the values into Equation 2, we get:

80 = 2(l + w) (Equation 3)

Now, let's solve the system of equations formed by Equations 1 and 3 to find the values of l and w.

Solving the system of equations

Substituting Equation 1 into Equation 3, we have:

80 = 2(3w + w)

Simplifying the equation, we get:

80 = 2(4w)

Dividing both sides by 2, we get:

40 = 4w

Dividing both sides by 4, we find:

w = 10

Now, substituting the value of w back into Equation 1, we can find the value of l:

l = 3w = 3(10) = 30

Therefore, the width of the rectangle is 10 cm and the length is 30 cm.

Answer

The sides of the rectangle MNKL are 10 cm (width) and 30 cm (length).