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Surface Area Calculator
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Do you know what is surface area? Surface area is the area of a given object. Surface area is commonly denoted S. Surface area is mostly used to find an area of a 3-dimensional object. A sphere is a three-dimensional shape which looks like round ball. Surface Area of a Sphere is the measure of how much exposed area a sphere has and it's measured in square units. For example, see the calculator mentioned in this page where by putting radius you will get surface area. The formula for finding the surface area of a sphere is given by,

Surface area=4$\pi r^{2}$


Surface Area of a Sphere


 

Steps for Calculating Surface Area of a Sphere

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Step 1 :  

Write down the radius of the given sphere from the question.



Step 2 :  

Substitute this value in surface area equation and find out the answer.



Example Problems on Surface Area of a Sphere

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  1. If the radius of a sphere is 5cm, what is the surface area of that?


    Step 1 :  

    It is given that,


    r=5cm



    Step 2 :  

    The equation to find out the surface area is,


    Surface area=4$\pi r^{2}$

    Surface area=4×3.14× $5^{2}$


    Surface area=314cm2



    Answer  :  

    Surface area of the given sphere is 314cm2



  2. Determine the surface area of a sphere whose radius is 3cm?


    Step 1 :  

    Given that,


    r=3cm



    Step 2 :  

    The equation to find out the surface area is,


    Surface area=4$\pi r^{2}$

    Surface area=4×3.14× $3^{2}$


    Surface area=113.04cm2



    Answer  :  

    Surface area of the given sphere is 113.04cm2



More Surface Area Calculator
Surface Area of a Cube Calculator Torus Surface Area Calculator
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