Question

Помогите: Знайдить диаметр круга,площа якого доривнюе 36п см2

Answer 1

Площадь круга рассчитывается по форумуле S=ПR^2 значит выразим R-радиус получим: R=корень квадратный из S/П т.е. R=кор.кв из 36П/П =6
А диаметр = 2R т.е. 2*6=12

Answer 2

Площадь равна пи*Р*Р ( Р -радиус). Значит Р=6
Диаметр=2Р=12
Ответ: 12 см

Answer 3

Calculating the Diameter of a Circle with a Given Area

To find the diameter of a circle with an area of 36 square centimeters, we can use the formula for the area of a circle and then calculate the diameter based on the given area.

Step 1: Calculate the Radius The formula for the area of a circle is given by the equation: \[ S = \pi r^2 \] where \( S \) is the area and \( r \) is the radius.

Using the given area of 36 square centimeters, we can solve for the radius: \[ S = \pi r^2 \] \[ 36 = \pi r^2 \] \[ r^2 = \frac{36}{\pi} \] \[ r = \sqrt{\frac{36}{\pi}} \]

Using the value of \( \pi \) as approximately 3.14, we can calculate the radius: \[ r \approx \sqrt{\frac{36}{3.14}} \] \[ r \approx \sqrt{11.46} \] \[ r \approx 3.39 \]

Step 2: Calculate the Diameter The diameter of a circle is twice the radius. Therefore, the diameter \( d \) is given by: \[ d = 2 \times r \] \[ d = 2 \times 3.39 \] \[ d \approx 6.78 \]

So, the diameter of the circle with an area of 36 square centimeters is approximately 6.78 centimeters.