Question

Чему равна площадь круга, радиус которого равен 5 см? При вычислениях число пи округли до сотых. Вырази площадь круга в квадратных сантиметрах. СПАСИБО

Answer 1

S=ПR^2
П=3,14
S=3,14*5^2=78,5 см^2

Answer 2

Ответ:

вспомни формулу и легко сделаешь

Пошаговое объяснение:

S=ППr(3)

Answer 3

Calculation of the Area of a Circle

To calculate the area of a circle, we can use the formula:

Area = π * r^2

where π (pi) is a mathematical constant approximately equal to 3.14, and r is the radius of the circle.

In this case, the radius of the circle is given as 5 cm. Therefore, we can substitute the value of the radius into the formula to find the area.

Area = 3.14 * (5 cm)^2

To calculate the area, we need to square the radius first:

Area = 3.14 * (25 cm^2)

Now, we can multiply the squared radius by π:

Area = 78.5 cm^2

Therefore, the area of the circle with a radius of 5 cm is 78.5 square centimeters.

Please note that the value of π has been rounded to two decimal places for simplicity.