Question

Знайдіть площу круга якщо його радіус дорівнює 3 см

Answer 1

Ответ:

Дано:круг,r=3см.

Знайти:S

Розв'язання.

S=πr².S=π•3²=9π(см²)

Пошаговое объяснение:

Відповідь:S=9πсм².

Answer 2

Finding the Area of a Circle with a Radius of 3 cm

To find the area of a circle, you can use the formula A = πr^2, where A represents the area and r represents the radius of the circle.

In this case, the radius of the circle is given as 3 cm. Therefore, we can substitute this value into the formula to find the area:

A = π(3 cm)^2

To calculate the area, we need to know the value of π (pi). The value of π is approximately 3.14159.

Substituting the values into the formula, we get:

A = 3.14159 * (3 cm)^2

Simplifying the equation, we have:

A = 3.14159 * 9 cm^2

Calculating the product, we find:

A ≈ 28.27431 cm^2

Therefore, the area of a circle with a radius of 3 cm is approximately 28.27431 square centimeters.