gagaga95829920
gagaga95829920 gagaga95829920
  • 22-05-2021
  • Mathematics
contestada

help help help plssssss

help help help plssssss class=

Respuesta :

jimrgrant1 jimrgrant1
  • 22-05-2021

Answer:

SA = 108π cm²

Step-by-step explanation:

The surface area (SA) of a sphere is calculated as

SA = 4πr² ( r is the radius )

Thus the SA of a hemisphere is

SA = [tex]\frac{1}{2}[/tex] × 4πr² = 2πr²

The area of the circular base = πr²

Then total SA is

SA = 2πr² + πr² = 3πr² = 3π × 6² = 3π × 36 = 108π cm²

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