Respuesta :

altavistard

Answer:

A = 2512 cm²

Step-by-step explanation:

The surface area of a sphere is A = 2πr².  With d = 40 cm, r = 20 cm, and so the surface area of this sphere is A = 2(3.14)(20 cm)², which works out to  A = 2512 cm²

Answer:

Step-by-step explanation:

Otras preguntas