Question

1. Найдите площадь прямоугольника, если его ширина на 10 сантиметров меньше длины, а полупериметр равен 26 сантиметров. ПОМОГИТЕ ПОЖАЛУЙСТА.

Answer 1

1. 26×2=52см-Р
х-ширина
х+10 -длина
(х+х+10)×2=52
(2х+10)×2=52
4х+20=52
4х=52-20
4х=32
х=8

8см-ширина
8+10=18-длина
s=8×18=144см2

Answer 2

Calculating the Area of a Rectangle

To find the area of a rectangle, we can use the formula: Area = length × width. In this case, we are given that the width is 10 centimeters less than the length, and the semiperimeter is 26 centimeters.

Given Information

- Width (w) = length (l) - 10 - Semiperimeter (s) = 26

Calculating the Length and Width

To find the length and width, we can use the following equations: 1. Length (l) = Width (w) + 10 2. Semiperimeter (s) = 2 × (Length + Width)

Solution

Using the given information and the equations, we can solve for the length and width of the rectangle.

1. From the equation Length (l) = Width (w) + 10: - l = w + 10

2. From the equation Semiperimeter (s) = 2 × (Length + Width): - 26 = 2 × (l + w)

Calculating the Area

Once we have the length and width, we can calculate the area using the formula Area = length × width.

Final Steps

After finding the length and width, we can use the formula Area = length × width to calculate the area of the rectangle.

Let's proceed with the calculations.