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8 October, 11:48

What is the surface area of a sphere that has a radius of 5cm? use 3.14

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Answers (2)
  1. 8 October, 11:55
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    Surface area of a sphere is roughly 4 times the area of a circle with same readius

    aka

    SA=4pir^2

    pi=3.14 for this problem

    r=5

    SA=4*3.14*5^2

    SA=4*3.14*25

    SA=100*3.14

    SA=314

    answer is 314 cm^2
  2. 8 October, 11:59
    0
    The answer is 314cm ².

    The formula for the surface area of a sphere is: A=4πr ².

    A=4 * 3.14*5 ²

    First solve for exponents.

    A=4 * 3.14 * 25

    Then multiply.

    A=314cm ²
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