Question

Периметр прямоугольника равен 18 см.а его площадь 14см2. Определи чему равны длина и ширина прямоугольника?

Answer 1

Длина=7см Высота(меньшая сторона )=2 см Площадь равна 14см2 то есть длина умножите на высоту Площадь равна 7 умножите на 2=14 см2 Ну а периметр 7+7+2+2=18 Если что периметр это сумма длин всех сторон

Answer 2

(a+b)*2=p a*b=s тогда a+b=9 a*b=14*14 решай и
получишь a=2 b=7

Answer 3

Perimeter and Area of a Rectangle

To find the length and width of a rectangle given its perimeter and area, we can use the following formulas:

1. Perimeter of a rectangle: P = 2(l + w), where P is the perimeter, l is the length, and w is the width. 2. Area of a rectangle: A = l * w, where A is the area, l is the length, and w is the width.

Given that the perimeter of the rectangle is 18 cm and the area is 14 cm², we can set up the following equations:

1. 18 = 2(l + w) 2. 14 = l * w

To solve these equations, we can use substitution or elimination methods. Let's use the substitution method:

From equation 1, we can isolate l:

l = (18 - 2w) / 2

Substituting this value of l into equation 2, we get:

14 = [(18 - 2w) / 2] * w

Simplifying the equation:

28 = 18w - 2w²

Rearranging the equation:

2w² - 18w + 28 = 0

Now we can solve this quadratic equation to find the values of w (width).