Answer:
The length of fencing will be 
Step-by-step explanation:
Step 1
Find the dimensions of the rectangle
we know that
The area of a rectangle is equal to

In this problem we have

so
-----> equation A
-----> equation B
Substitute equation B in equation A

square root both sides

Find the value of b
-----> 
step 2
Find the length of fencing
The perimeter of a rectangle is equal to

we have


substitute

Quite hard to explain:
This is mainly due to duck.
Goose.
Duck.
Mark me as the brainliest..
Answer:
The measures of angle are 46 degrees and 134 degrees.
Step-by-step explanation:
We are given the following in the question:
Let the measure of one the of the supplementary angles be x degrees.
Measure of other angle =

Since, the two angles are supplementary, their sum is 180 degrees.
Thus, we can write and solve the equation:

Thus, the measures of angle are 46 degrees and 134 degrees.