Question

Периметр стола прямоугольной формы 180 дм. ширина стола 30дм. чему равна его площадь?

Answer 1

Тут с рисунком) пишу это тк надо больше символов

Answer 2

180/2-30=60 (дм) -  длина стола.
60*30= 1800 (дм. кв.)

Answer 3

Calculation of the Perimeter and Area of a Rectangular Table

To find the area of a rectangular table, we first need to calculate its perimeter using the given information. The perimeter of a rectangle is the sum of all its sides.

Given: - Perimeter of the table: 180 dm - Width of the table: 30 dm

To calculate the perimeter, we can use the formula P = 2(a + b), where P is the perimeter, a is the length, and b is the width of the rectangle.

Let's substitute the given values into the formula:

P = 2(a + b) 180 = 2(a + 30)

Now, we can solve for the length (a):

180 = 2a + 60 2a = 180 - 60 2a = 120 a = 120 / 2 a = 60

Therefore, the length of the table is 60 dm.

Now that we know the length and width of the table, we can calculate its area. The area of a rectangle is given by the formula A = length × width.

Let's substitute the values into the formula:

A = 60 × 30 A = 1800

Therefore, the area of the rectangular table is 1800 square dm.

Please let me know if there's anything else I can help you with!