contestada

Find the surface area (Leave your answer in terms of π) of a sphere with a circumference of 26π. Use 4πr² to solve. Circumference =2πr 776π 676π 169π 885π

Respuesta :

carlosego
The surface area of the sphere is given by:
 A = 4πr²
 Where,
 r: radius of the sphere.
 The circumference is given by:
 C = 2πr
 From here, we clear the radio:
 r = C / 2π
 r = 26π / 2π
 r = 13
 Substituting the radius in the equation of the area we have:
 A = 4πr²
 A = 4π (13) ²
 A = 676π
 Answer:
 the surface area is:
 A = 676π