Question

Пожалуйста!!!! 26 апреля 1986 года в четвёртом блоке чернобыльской АЭС радиоктивное облако разнеслось в радиусе 32 км. Эту территорию оградили. Рассчитайте площадь поражённой радиацией территории и длину ограждения.

Answer 1

S=Пr²   S= 3215.36км
Длинна ограждения 2Пr = 200.96км
П- число Пи

Answer 2

Calculation of the Area Affected by Radiation and Length of the Enclosure

On April 26, 1986, a radioactive cloud spread from the fourth block of the Chernobyl Nuclear Power Plant, affecting an area within a radius of 32 km. To calculate the area affected by radiation and the length of the enclosure, we need to use the formula for the area of a circle and the formula for the circumference of a circle.

The area of a circle is calculated using the formula: A = πr^2, where A is the area and r is the radius of the circle.

Given that the radius of the affected area is 32 km, we can calculate the area as follows:

A = π(32 km)^2

To calculate the length of the enclosure, we use the formula for the circumference of a circle: C = 2πr, where C is the circumference and r is the radius of the circle.

Given that the radius of the affected area is 32 km, we can calculate the length of the enclosure as follows:

C = 2π(32 km)

Let's calculate the values:

Calculation:

Area Affected by Radiation:

A = π(32 km)^2

Length of the Enclosure:

C = 2π(32 km)

Using the value of π as approximately 3.14159, we can calculate the area and length of the enclosure.

Results:

The area affected by radiation within a radius of 32 km is approximately 3216 km^2.

The length of the enclosure around the affected area is approximately 201.06 km.

Please note that these calculations are based on the given radius of 32 km and the assumption that the affected area is a perfect circle. The actual boundaries of the affected area may vary due to factors such as wind patterns and topography.