Answer:
504π
Explanation:
First, find LATERAL AREA 2πrh
r: 9 h: 19
LA= 2π (9*19)
LA = 2(171)π
LA = 342π
Next, use LA to find SURFACE AREA: 2πrh + 2πr^2.
SA = 342π + 2(9^2)π
SA = 342π + (2*81)π
SA = 342π + 162π Simplify.
SA = 504π
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