Respuesta :

arj1ta

answer:

104π or 326.56 inches^2

step-by-step explanation:

  • know the surface area formula for a cylinder
  • once you know that plug in the numbers given

formula: 2πrh+2πr^2

  • r stands for radius
  • h stands for height
  • π stands for pi

- now that you know that, plug in

2πrh+2πr^2

2π(4)(9) + 2π(4)^2

72π + 32π

104π

  • the answer would be 104π inches^2
  • you can further solve this by multiplying by 3.14 instead of putting π

Otras preguntas