Solve for r s=2 πrh
a. s/2= r
b. 2 πsh=r
c. s/2 π= r
d. s/2 πh= r

s =

Bring the whole under s, which means divide s by that to isolate r

Your answer is

d.

= r

since your problem is x^4 = 81, what you have to undeo is the "to the fourth power" part.

the inverse (opposite operation) of "to the fourth power" is "to the fourth root".

  (x^4) ^ ¼   = 81 ^ ¼  

  81 = 3^4     so (3 ^ 4) ^ ¼   =   3 ^ 1   = 3

by hand: (3 ^ 4) ^ ¼   =   3 ^ (4 x ¼) = 3 ^ 1   = 3   (when you take a power to a power, multiply the exponents.)

or, do it by calculator. one way of finding the fourth root is to use ^ (1/4)

step-by-step explanation:

answer: i can’t tell you that

step-by-step explanation: