Determine the area and circumference of a circle with radius 8 cm.

Circumference=50.27cm

Area=201.06cm

Step-by-step explanation:

The formula for the area of a circle is A=pir^2

The formula for the circumference of a circle is 2*pi*r

Just plug in 8 for r and 3.14 for pi you'll get your answers

The area and the circumference of a circle is A≈201.06cm² C≈50.27cm

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: idk

step-by-step explanation: