Question

Знайдіть площу поверхні кулі радіус якої дорівнює 3 дм.

Answer 1

Ответ:
S=36π дм²

Решение:
S=4πR²
S=4π*3²=36π дм²

Answer 2

Finding the Surface Area of a Sphere

To find the surface area of a sphere, we can use the formula:

Surface Area = 4πr^2

where π is a mathematical constant approximately equal to 3.14159, and r is the radius of the sphere.

In this case, the radius of the sphere is given as 3 dm (decimeters). To find the surface area, we can substitute the value of the radius into the formula:

Surface Area = 4π(3 dm)^2

Now, let's calculate the surface area.

Surface Area = 4π(9 dm^2)

Using the value of π as approximately 3.14159, we can simplify the equation:

Surface Area ≈ 4 × 3.14159 × 9 dm^2

Surface Area ≈ 113.097 dm^2

Therefore, the surface area of the sphere with a radius of 3 dm is approximately 113.097 square decimeters.

Please note that the sources provided did not contain specific information related to the calculation of the surface area of a sphere with a radius of 3 dm. However, the formula and calculation provided are standard mathematical principles for finding the surface area of a sphere.