4^3 = 64
log4 64 = 3
The exponent always comes to the other side.
The answer to this problem is 20.485
Answer:

Step-by-step explanation:
Given


c = hypotenuse
Required
Find c
Using Pythagoras theorem, we have:

Substitute values for a and b



Take square roots of both sides:

Express 20 as 4 * 5

Split surd

Take square root of 4


- You can rewrite 4 as 2²
- You can eliminate the brackets and get - 2² + 3
So that's answer C