Find the surface area of a square pyramid with a base that measures 10 m on each side and has a slant height of 20 m.

500 m²

Step-by-step explanation:

base = 10 X 10 = 100 m²

triangle = 1/2(10)(20) = 100 m²

4 triangles + base = 400 + 100 = 500 m²

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: