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
