6.4 ounces. 
You can get this by first converting to ounces which is a smaller value. Then you can divide by 10. 
        
             
        
        
        
1) Change radical forms to fractional exponents using the rule:The n<span>th root of "</span>a number" = "that number" raised to the<span> reciprocal of n. 
For example </span>
![\sqrt[n]{3} =   3^{ \frac{1}{n} }](https://tex.z-dn.net/?f=%20%5Csqrt%5Bn%5D%7B3%7D%20%3D%20%20%203%5E%7B%20%5Cfrac%7B1%7D%7Bn%7D%20%7D)
.
The square root of 3 (

) = 3 to the one-half power (

).
The 5th root of 3 (
![\sqrt[5]{3}](https://tex.z-dn.net/?f=%20%5Csqrt%5B5%5D%7B3%7D%20)
) = 3 to the one-fifth power (

).
2) Now use the product of powers exponent rule to simplify:This rule says 

. When two expressions with the same base (a, in this example) are multiplied, you
can add their exponents while keeping the same base.
You now have 

. These two expressions have the same base, 3. That means you can add their exponents:
 3) You can leave it in the form
3) You can leave it in the form  or change it back into a radical
 or change it back into a radical ![\sqrt[10]{3^7}](https://tex.z-dn.net/?f=%20%5Csqrt%5B10%5D%7B3%5E7%7D%20)
------
Answer: 
 or
 or ![\sqrt[10]{3^7}](https://tex.z-dn.net/?f=%20%5Csqrt%5B10%5D%7B3%5E7%7D%20) 
 
        
             
        
        
        
I hope this helped and have a great day.
You need to times 2/3 twice
-2/-3 * -2/3
 
        
             
        
        
        
Part A=5 inches 
Part B=6.25 
I know part A but not sure I think thats the answer for part B