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Diano4ka-milaya [45]
3 years ago
10

1 & 2) what are the surface areas? please explain.

Mathematics
2 answers:
mote1985 [20]3 years ago
8 0
To find the surface area of a cylinder, use the formula SA = 2(pi)(radius^2) + 2(pi)(radius)(height).

So now, plug in what you know.

SA = 2(3.14)(5^2) + 2(3.14)(5)(9)
SA = (6.28)(25) + (6.28)(45)
SA = 157 + 282.6
SA = 439.6 square cm

439.6 square cm is your surface area
Sunny_sXe [5.5K]3 years ago
7 0
To find the surface area of a cylinder, use the formula SA = 2(pi)(radius^2) + 2(pi)(radius)(height).

So now, plug in what you know.

SA = 2(3.14)(5^2) + 2(3.14)(5)(9)
SA = (6.28)(25) + (6.28)(45)
SA = 157 + 282.6
SA = 439.6 square cm

<span>439.6 square cm is your surface area

Hope this helps.</span>
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