What is the volume of the composite figure ?

Volume Area 1 - Long Rectangle = 8 x 4 x 2 =64

Volume smaller Rectange = 2 x 2 x 3 = 12

Total Volume = 64 + 12 = 76 cubic inches

Step-by-step explanation:

goog may have it for you

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: