The surface area of music box is 384 square centimeter
<em><u>Solution:</u></em>
Given that,
Volume of cubed shaped music box = 512 cubic centimeter
To find: Surface area of music box
<em><u>The volume of cube is given as:</u></em>

Where, "a" is the length of side
Therefore,

Taking cube root on both sides,
![a = \sqrt[3]{512}](https://tex.z-dn.net/?f=a%20%3D%20%5Csqrt%5B3%5D%7B512%7D)
![a = \sqrt[3]{8 \times 8 \times 8}\\\\ a = \sqrt[3]{8^3}](https://tex.z-dn.net/?f=a%20%3D%20%5Csqrt%5B3%5D%7B8%20%5Ctimes%208%20%5Ctimes%208%7D%5C%5C%5C%5C%20a%20%3D%20%5Csqrt%5B3%5D%7B8%5E3%7D)


Thus length of side of cube is 8 cm
<em><u>Find surface area of cubed shaped music box</u></em>
<em><u>The surface area of cube is given as:</u></em>

Substitute a = 8 in above formula

Thus surface area of music box is 384 square centimeter
 
        
             
        
        
        
Step-by-step explanation:
a(n) = a +(n-1)d
a=13
d=9-13=5-9=-4
°.° a(n) = 13 +(n–1)-4
hope this helps
 
        
             
        
        
        
The formula for working out speed : 
speed = distance ÷ time.
substitute the numbers : 100m ÷ 10.92s.
give your answer in meters per second ( m/s )
the answer I got while working this out was: 
9.2 m/s.
        
                    
             
        
        
        
Answer:
1
Step-by-step explanation:
b= -2, b2 +6b +9
=-2(2)+6(-2)+9
=-4-12+9
=4+9-12
=13-12
=1
 
        
             
        
        
        
Answer:$257.5
Step-by-step explanation: add all the amounts then divide by 4