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5 votes
Find the surface area of a sphere with radius, r = 10 in.​

2 Answers

5 votes

Answer:
\text{400}\pi \ \text{square inches}

Explanation:

Given: The radius of the sphere = 10 in.

The formula to calculate the surface area of the sphere is given by:


\text{Surface Area}=4\pi r^2, where r is the radius of the sphere.

For r = 10 in. we have


\text{Surface Area of the sphere}=4\pi (10)^2


\implies \text{Surface Area of sphere}=4\pi (100)


\implies \text{Surface Area of the sphere}=\text{400}\pi \ \text{square inches}


  • 400\pi =1256.64 \ \text{square inches}
User Ryan Chu
by
7.6k points
3 votes

Answer: ~1256.64

Explanation:

The equation for the surface area of a sphere is 4πr². So you would substitute 10 in for r which would then be 4π10². That will get you 1256.63706 but rounded it would be approximately 1256.64.

User Zilla
by
7.7k points

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