please help me this is for a grade and I don't understand it

Answer:
S = 2πr^2 + 2πrh
S = 2 * 3.4 * 7^2 + 2 * 3.4 * 7 * 7
Step-by-step explanation:
Answer:
S = 2πr^2 + 2πrh
S = 2 * 3.4 * 7^2 + 2 * 3.4 * 7 * 7
Hope you get a good grade!!
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