Respuesta :

r3t40
Hi,


Formula to calculate the surface area of cylinder:

[tex]a = 2 \times \pi \times r \times h + 2 \times \pi \times {r}^{2} [/tex]

Solving:

[tex]a = 2 \times \pi \times 2 \times 5 + 2 \times \pi \times {2}^{2} \\ a = 2 \times \pi \times 10 + 2 \times \pi \times 4 \\ a = 6.28 \times 10 + 6.28 \times 4 \\ a = 62.8 + 25.12 \\ a = 87.92 \div 3.14 \\ a = 28\pi[/tex]

Answer: B


Hope this helps.
If you have any questions left feel free to ask.
r3t40

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