Question

Чему равна площадь поверхности пульта управления полётом самолёта,если она в 4 раза больше площади поверхности прямоугольного экрана с периметром 16 дм и шириной 2 дм?

Answer 1

Длина экрана (16-2-2)/2=6 дм

Площадь экрана 6*2=12 дм2

12*4=48 дм2 площадь пульта

Answer 2

Calculation of the Surface Area of the Control Panel and the Rectangular Screen

To calculate the surface area of the control panel of an airplane's flight control, we need to compare it to the surface area of a rectangular screen with a given perimeter and width.

Let's break down the problem step by step:

1. We are given that the perimeter of the rectangular screen is 16 dm and the width is 2 dm. 2. To find the length of the rectangular screen, we can use the formula for the perimeter of a rectangle: perimeter = 2 * (length + width). 3. Rearranging the formula, we have length = (perimeter - 2 * width) / 2. 4. Substituting the given values, we get length = (16 dm - 2 * 2 dm) / 2 = 6 dm. 5. Now that we have the length and width of the rectangular screen, we can calculate its surface area using the formula: surface area = length * width. 6. Substituting the values, we get surface area = 6 dm * 2 dm = 12 dm².

Now, we are given that the surface area of the control panel is 4 times larger than the surface area of the rectangular screen.

To find the surface area of the control panel, we can multiply the surface area of the rectangular screen by 4.

7. Surface area of the control panel = 4 * surface area of the rectangular screen = 4 * 12 dm² = 48 dm².

Therefore, the surface area of the control panel of the airplane's flight control is 48 dm².