Multiple choice

Calculate the surface area and the volume of the sphere with radius $12$ ft.

  1. $\displaystyle V=6234.56{\ ft }^{ 3 }$ and $ A=1808.64{\  ft }^{ 2 }$
  2. $\displaystyle V=7234.56{ \ ft }^{ 3 }$ and $ A=1808.64{\  ft }^{ 2 }$
  3. $\displaystyle V=6234.56{ \ ft }^{ 3 }$ and $ A=2808.64{ \ ft }^{ 2 }$
  4. $\displaystyle V=7134.56{\  ft }^{ 3 }$ and $ A=1808.64{ \ ft }^{ 2 }$
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B Correct answer
Explanation

The volume of a sphere is (4/3) * pi * r^3 and the surface area is 4 * pi * r^2. For r = 12, V = (4/3) * 3.14 * 1728 = 7234.56 and A = 4 * 3.14 * 144 = 1808.64.

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