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OpenStudy (anonymous):
need help
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OpenStudy (anonymous):
|dw:1399138649518:dw|
OpenStudy (anonymous):
Find the surface area of the cylinder in terms of . A. 396 in.2 B. 522 in.2 C. 360 in.2 D. 1008 in.2
hartnn (hartnn):
use this formula \(SA = base~area + curved ~ area = 2\pi r^2 + 2\pi r h\)
hartnn (hartnn):
r = 9 h = 20
OpenStudy (anonymous):
ok how
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hartnn (hartnn):
A = 2* 3.14* 9^2 + 2*3.14*9*20= ...?
hartnn (hartnn):
in terms of pi, A = 2*9^2 +2*9*20
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