FInd the surface area of a sphere with radius 10 in. Leave your answer in terms of pi. A. 400pi square inches B. 4,000/3pi square inches C. 100pi square inches
Mathematics
dancer1327
Question
FInd the surface area of a sphere with radius 10 in. Leave your answer in terms of pi.
A. 400pi square inches
B. 4,000/3pi square inches
C. 100pi square inches
D. 500/3pi square inches
A. 400pi square inches
B. 4,000/3pi square inches
C. 100pi square inches
D. 500/3pi square inches
2 Answer

1. User Answers mreijepatmat
The area of a sphere is : 4π.R²
Here R(radius) = 10 ===R²=100
& The Area is 400π inches² 
2. User Answers JeanaShupp
Answer: A. [tex]400\pi\text{ square inches}[/tex]
Stepbystep explanation:
Given: The radius of the sphere = 10 in.
The formula to calculate the surface area of the sphere is given by:
[tex]\text{Surface Area}=4\pi r^2[/tex], where r is the radius of the sphere.
For r=10 in. we have
[tex]\text{Surface Area of sphere}=4\pi (10)^2\\\\\Rightarrow\text{Surface Area of sphere}=4\pi(100)\\\\\Rightarrow\text{Surface Area of sphere}=400\pi\text{ square inches}[/tex]