Question

R=3см C-? S-? help 52 ball​

Answer 1

Ответ:C=6$\pi$cm ;S$=9\pi cm^2$

Объяснение:if  C is the circumference of the circle then C=2$\pi r$=6$\pi$ ; S=$\pi r^2$=9$\pi$

Answer 2

It seems like you're providing some information about a sphere with a radius of 3 centimeters and asking for the values of its circumference (C) and surface area (S). Let's calculate those values:

1. Circumference (C) of a sphere: The formula for the circumference of a sphere is given by: C = 2πr where:

   • C is the circumference,
   • π (pi) is approximately 3.14159,
   • r is the radius of the sphere.

   In your case, the radius (r) is 3 centimeters: C = 2 * π * 3 cm = 6π cm (approximately 18.85 cm).

2. Surface Area (S) of a sphere: The formula for the surface area of a sphere is given by: S = 4πr² where:

   • S is the surface area,
   • π (pi) is approximately 3.14159,
   • r is the radius of the sphere.

   In your case, the radius (r) is 3 centimeters: S = 4 * π * (3 cm)² = 36π cm² (approximately 113.1 cm²).

So, for a sphere with a radius of 3 centimeters:

• The circumference (C) is approximately 18.85 cm.
• The surface area (S) is approximately 113.1 square centimeters.