Answer:
324π in²
Step-by-step explanation:
The surface area of a sphere = 4πr² ( r is the radius )
Calculate r using the volume (V) formula
V =  πr³
πr³
Here V = 972π , thus
 πr³ = 972π ( divide both sides by π )
πr³ = 972π ( divide both sides by π )
 r³ = 972 ( multiply both sides by 3 to clear the fraction )
r³ = 972 ( multiply both sides by 3 to clear the fraction )
4r³ = 2916 ( divide both sides by 4 )
r³ = 729 ( take the cube root of both sides )
r = ![\sqrt[3]{729}](https://tex.z-dn.net/?f=%5Csqrt%5B3%5D%7B729%7D) = 9
 = 9
Thus
surface area = 4π × 9² = 4π × 81 = 324π in²
 
        
                    
             
        
        
        
Answer: 33.3% increase, pretty sure 
Step-by-step explanation: Big number- Small number, and then divided by the first number: 44-33=11. 11 divided by 33 ( original) is 0.3333, and then change the decimal to a percent, which is 33.3%.
 
        
             
        
        
        
Answer:
<h2>
k = 31/9</h2><h2>
b = 12</h2>
Step-by-step explanation:
<u>k - 4</u> = 3
    9
k/9  = 3(9) + 4
k = 31/9
k = 31/9
<u>8 + b </u> = -5
   -4
8 + b = -5 (-4)
8 +  b = 20
b = 20 - 8
b = 12