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Alborosie
3 years ago
8

Find the Surface Area of a cylinder with a base radius of 2 cm and a height of 3 cm. Use pi = 3.14

Mathematics
2 answers:
Roman55 [17]3 years ago
7 0
S=2\pi r(r+h)\\
S=2\cdot3.14\cdot2\cdot(2+3)\\
S=12.56\cdot5\\
S=62.8\ cm^2
Oksi-84 [34.3K]3 years ago
5 0
A_S=2\pi r^2+2\pi rH\\\\r=2cm;\ H=3cm\\\\A_S=2\pi\cdot2^2+2\pi\cdot2\cdot3=2\pi\cdot4+2\pi\cdot6=8\pi+12\pi=20\pi\ (cm^2)\\\\20\pi\approx20\cdot3.14=62.8\ (cm^2)
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