Answer

Step-by-step explanation:
first off rt(2x^5) can be simplified as x^2 rt(2x) because we can break up x^5 into x^4 * x. x^4 is a perfect square so factor out a x^2.
the denominator
can be written as
since the factors of 18 involve a perfect square of 9. 9*2 is 18 so factor out a 3.
the whole fraction :

cancel out the
and you are left with 
Circumstances?
I have seen a circle about that size used for a labyrinth at a church.
Circumference is found by multiplying the diameter by pi.
(12 ft)*π ≈ 37.7 ft
Let the two numbers be x and y, then
x + y = 62 . . . . . . . (1)
x - y = 18 . . . . . . . .(2)
subtracting (2) from (1), we have:
2y = 44
y = 22
From (2), x + 22 = 62
x = 62 - 22 = 40
therefore, the two numbers are 40 and 22.
The length is 30 meters and the width is 12 meters.