Question

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

Answer 1

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}`

Answer 2

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.