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anonymous

  • one year ago

A balloon has a circumference of 17 cm. Use the circumference to approximate the surface area of the balloon to the nearest square centimeter. a. 92 cm2 b. 368 cm2 c. 908 cm2 d. 289 cm2

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  1. Loves_Leggings
    • one year ago
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    I like balloons

  2. anonymous
    • one year ago
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    @Loves_Leggings lols me too

  3. welshfella
    • one year ago
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    surface area of the balloon = 4 pi r^2 where r = radius the circumference = 2 pi r so 17 = 2 pi r now solve for r then plug this value into the formula for the surface area

  4. anonymous
    • one year ago
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    thanks @welshfella

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