The measure in radians for the central angle of the circle is; 0.9 radians.
<h3>What is the angle measure in radians of the central angle?</h3>
Since, the length of the arc is given as 7.2cm and it's radius is 8cm.
It follows that the angle measure of the central angle can be evaluated as follows;
7.2 = (A/6.28) × 2× 3.14 × 8
7.2 = 8A
A = 7.2/8
A = 0.9 radians.
Read more on radian measure;
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The volume of sphere is  feet cubed.
 feet cubed.
Step-by-step explanation:
Given, 
Surface area of sphere = 196π square feet 
Surface area of sphere = 4πr²
We will find radius of sphere.

Dividing both sides by 4π

Taking square root on both sides 

The radius is 7 feet. 
Volume of sphere = 

The volume of sphere is  feet cubed.
 feet cubed.
Keywords: volume, surface area 
Learn more about surface area at:
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Suggestion: tell me that you want answer of all or anyone. 
 
        
             
        
        
        
Answer:
3
1
2
Step-by-step explanation:
Math simplification