so what you need to do here to check your work is to find 14 and 20 squared (which are 196 and 400) now your equation is 196 + 400 = c^2. now, you combine the like terms to make 596 = c^2. all you have to do now is find the square root of 596 (which is 24.4 when rounded to the nearest tenth). so yes, you are correct.
6 to the third power would be 6x6x6 which equals 216. All you do to find the power is multiply the number by its self the amount of times it asks like 4 to the second power would be 16 and 8 to the 4 power would be 4096
