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xojazzyyxo

  • one year ago

A cylinder has a radius of 2 cm and a height of 8 cm. The surface area of the cylinder is _____ cm².

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  1. Luigi0210
    • one year ago
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    Do you know thw formula for surface area of a cylinder?

  2. xojazzyyxo
    • one year ago
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    yes , 2*pi*r^2+2*pi*r h

  3. Luigi0210
    • one year ago
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    Good, now do you know what the variables stand for?

  4. xojazzyyxo
    • one year ago
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    yes

  5. Luigi0210
    • one year ago
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    so what does r and h stand for?

  6. xojazzyyxo
    • one year ago
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    r=2 h=8

  7. Luigi0210
    • one year ago
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    Exactly :P Now just plug them in and solve. Is your answer rounded or exact?

  8. Luigi0210
    • one year ago
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    Exact: 40pi Rounded: 125.6637

  9. xojazzyyxo
    • one year ago
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    thanks

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