Answer:
21
Step-by-step explanation:
This is true sometimes and false sometimes, depending on the numbers.
Answer:
9m
Step-by-step explanation:
The surface area of a cube is given by
SA = 6s^2 where s is the side length
We know the surface area is 486 and the side length is z
486 = 6z^2
Divide each side by 6
486/6 = 6z^2/6
81 = z^2
Take the square root of each side
sqrt(81) = sqrt(z^2)
9 = z
Each side has a length of 9m
Log (base 3) x = 4 can be rewritten as:
3^4 = x
3^4 = 81
x = 81