Question

Найдите площадь круга, диаметр которого равен 3,6дм.Округлите результаты до целых.

Answer 1

я закреп фото решения

Пошаговое объяснение:

вот

Answer 2

Ответ:

R=3.6/2=1.8дм

S=1.8*1.8*3.14=10 это сразу с округлением

Пошаговое объяснение:

Answer 3

Calculating the Area of a Circle

To find the area of a circle, you can use the formula: A = πr^2, where A is the area and r is the radius of the circle. However, in this case, we are given the diameter of the circle, not the radius.

To convert the diameter to the radius, we divide it by 2. So, if the diameter is 3.6 dm, the radius would be 3.6 dm / 2 = 1.8 dm.

Now, we can substitute the radius into the formula to calculate the area:

A = π(1.8 dm)^2

To round the result to the nearest whole number, we can use the standard rounding rule: round up if the decimal part is 0.5 or greater, and round down if it is less than 0.5.

Let's calculate the area using the given diameter:

A = π(1.8 dm)^2

A = π(3.24 dm^2)

Using the value of π as approximately 3.14159, we can calculate the area:

A ≈ 3.14159 * 3.24 dm^2

A ≈ 10.179624 dm^2

Rounding this result to the nearest whole number, we get:

A ≈ 10 dm^2

Therefore, the area of the circle with a diameter of 3.6 dm is approximately 10 square decimeters.